diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 012edf7aad..51ff16f9dd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -289,7 +289,7 @@ jobs:
             ETHEREUM_URL: ${{ secrets.ETHEREUM_URL }}
             AZLE_IDENTITY_STORAGE_MODE: 'plaintext'
             AZLE_END_TO_END_TEST_LINK_AZLE: ${{ matrix.azle_source == 'repo' }}
-            AZLE_QUICK_TEST: ${{ matrix.azle_source == 'repo'}}
+            AZLE_TEST_RUN_ON_RELEASE: ${{ contains(github.head_ref, 'release--') }}
         strategy:
             fail-fast: false # We want to see which example tests succeed and which ones fail, we don't want one example test to cancel the rest
             matrix:
diff --git a/examples/basic_bitcoin/src/index.ts b/examples/basic_bitcoin/src/index.ts
index bfe32817df..4513aefbbd 100644
--- a/examples/basic_bitcoin/src/index.ts
+++ b/examples/basic_bitcoin/src/index.ts
@@ -68,17 +68,28 @@ app.get('/get-p2pkh-address', async (req, res) => {
 /// Sends the given amount of bitcoin from this canister to the given address.
 /// Returns the transaction ID.
 app.post('/send', async (req, res) => {
-    const { destinationAddress, amountInSatoshi } = req.body;
-
-    const txId = await bitcoinWallet.send(
-        NETWORK,
-        DERIVATION_PATH,
-        KEY_NAME,
-        destinationAddress,
-        BigInt(jsonParse(JSON.stringify(amountInSatoshi)))
-    );
-
-    res.send(txId);
+    try {
+        const { destinationAddress, amountInSatoshi } = req.body;
+
+        const txId = await bitcoinWallet.send(
+            NETWORK,
+            DERIVATION_PATH,
+            KEY_NAME,
+            destinationAddress,
+            BigInt(jsonParse(JSON.stringify(amountInSatoshi)))
+        );
+
+        res.send(txId);
+    } catch (error: any) {
+        res.status(500).json({
+            success: false,
+            error: {
+                code: error.code || 'UNKNOWN_ERROR',
+                message: error.message,
+                details: error.info || null
+            }
+        });
+    }
 });
 
 app.listen();
diff --git a/examples/bitcoin_psbt/src/index.ts b/examples/bitcoin_psbt/src/index.ts
index 0bb512a623..f4467f4b95 100644
--- a/examples/bitcoin_psbt/src/index.ts
+++ b/examples/bitcoin_psbt/src/index.ts
@@ -69,17 +69,28 @@ app.get('/get-p2wpkh-address', async (req, res) => {
 /// Sends the given amount of bitcoin from this canister to the given address.
 /// Returns the transaction ID.
 app.post('/send', async (req, res) => {
-    const { destinationAddress, amountInSatoshi } = req.body;
-
-    const txId = await bitcoinWallet.send(
-        NETWORK,
-        DERIVATION_PATH,
-        KEY_NAME,
-        destinationAddress,
-        BigInt(jsonParse(JSON.stringify(amountInSatoshi)))
-    );
-
-    res.send(txId);
+    try {
+        const { destinationAddress, amountInSatoshi } = req.body;
+
+        const txId = await bitcoinWallet.send(
+            NETWORK,
+            DERIVATION_PATH,
+            KEY_NAME,
+            destinationAddress,
+            BigInt(jsonParse(JSON.stringify(amountInSatoshi)))
+        );
+
+        res.send(txId);
+    } catch (error: any) {
+        res.status(500).json({
+            success: false,
+            error: {
+                code: error.code || 'UNKNOWN_ERROR',
+                message: error.message,
+                details: error.info || null
+            }
+        });
+    }
 });
 
 app.listen();
diff --git a/property_tests/tests/stable_b_tree_map/test/contains_key.ts b/property_tests/tests/stable_b_tree_map/test/contains_key.ts
index 07f0c8d297..c0a8280c14 100644
--- a/property_tests/tests/stable_b_tree_map/test/contains_key.ts
+++ b/property_tests/tests/stable_b_tree_map/test/contains_key.ts
@@ -40,7 +40,7 @@ export function ContainsKeyTestArb(
 }
 
 function generateBody(stableBTreeMapName: string): string {
-    return `
+    return /*TS*/ `
         return ${stableBTreeMapName}.containsKey(param0);
     `;
 }
diff --git a/property_tests/tests/stable_b_tree_map/test/get.ts b/property_tests/tests/stable_b_tree_map/test/get.ts
index 7ee9b60622..958bcb1c2a 100644
--- a/property_tests/tests/stable_b_tree_map/test/get.ts
+++ b/property_tests/tests/stable_b_tree_map/test/get.ts
@@ -24,7 +24,9 @@ export function GetTestArb(
             ].join(', ');
 
             const returnCandidTypeObject = `Opt(${stableBTreeMap.valueSample.src.candidTypeObject})`;
-            const body = generateBody(stableBTreeMap.name);
+            const valueTypeIsNull =
+                stableBTreeMap.valueSample.src.candidTypeAnnotation === 'Null';
+            const body = generateBody(stableBTreeMap.name, valueTypeIsNull);
 
             const tests = generateTests(
                 functionName,
@@ -43,10 +45,14 @@ export function GetTestArb(
         });
 }
 
-function generateBody(stableBTreeMapName: string): string {
+function generateBody(
+    stableBTreeMapName: string,
+    valueTypeIsNull: boolean
+): string {
     return /*TS*/ `
         const result = ${stableBTreeMapName}.get(param0);
-        if (result === null) {
+        const containsKey = ${stableBTreeMapName}.containsKey(param0); // For situations where the stored value is literally null
+        if (result === null ${valueTypeIsNull ? '&& !containsKey' : ''}) {
             return None
         } else {
             return Some(result)
diff --git a/property_tests/tests/stable_b_tree_map/test/remove.ts b/property_tests/tests/stable_b_tree_map/test/remove.ts
index b8c1d0390a..ddf2bb86fa 100644
--- a/property_tests/tests/stable_b_tree_map/test/remove.ts
+++ b/property_tests/tests/stable_b_tree_map/test/remove.ts
@@ -24,7 +24,9 @@ export function RemoveTestArb(
             ].join(', ');
 
             const returnCandidTypeObject = `Opt(${stableBTreeMap.valueSample.src.candidTypeObject})`;
-            const body = generateBody(stableBTreeMap.name);
+            const valueTypeIsNull =
+                stableBTreeMap.valueSample.src.candidTypeAnnotation === 'Null';
+            const body = generateBody(stableBTreeMap.name, valueTypeIsNull);
 
             const tests = generateTests(
                 functionName,
@@ -43,10 +45,14 @@ export function RemoveTestArb(
         });
 }
 
-function generateBody(stableBTreeMapName: string): string {
+function generateBody(
+    stableBTreeMapName: string,
+    valueTypeIsNull: boolean
+): string {
     return /*TS*/ `
+        const containsKey = ${stableBTreeMapName}.containsKey(param0); // For situations where the stored value is literally null
         const result = ${stableBTreeMapName}.remove(param0);
-        if (result === null) {
+        if (result === null ${valueTypeIsNull ? '&& !containsKey' : ''}) {
             return None
         } else {
             return Some(result)
diff --git a/tests/end_to_end/candid_rpc/class_syntax/ethereum_json_rpc/jest.config.js b/tests/end_to_end/candid_rpc/class_syntax/ethereum_json_rpc/jest.config.js
index 3ab7e2d25e..43cb5d4f5d 100644
--- a/tests/end_to_end/candid_rpc/class_syntax/ethereum_json_rpc/jest.config.js
+++ b/tests/end_to_end/candid_rpc/class_syntax/ethereum_json_rpc/jest.config.js
@@ -2,6 +2,7 @@
 module.exports = {
     preset: 'ts-jest',
     testEnvironment: 'node',
+    testTimeout: 100_000_000,
     transform: {
         '^.+\\.ts$': ['ts-jest', { isolatedModules: true }],
         '^.+\\.js$': 'ts-jest'
diff --git a/tests/end_to_end/candid_rpc/class_syntax/new/package.json b/tests/end_to_end/candid_rpc/class_syntax/new/package.json
index 600353dd98..6141803118 100644
--- a/tests/end_to_end/candid_rpc/class_syntax/new/package.json
+++ b/tests/end_to_end/candid_rpc/class_syntax/new/package.json
@@ -1,7 +1,7 @@
 {
     "name": "new_end_to_end_test_functional_syntax",
     "scripts": {
-        "test": "if [ \"$AZLE_QUICK_TEST\" != \"true\" ]; then tsx test/test.ts; else echo 'Skipping pretests'; fi"
+        "test": "if [ \"$AZLE_TEST_RUN_ON_RELEASE\" == \"true\" ]; then tsx test/test.ts; else echo 'Skipping pretests'; fi"
     },
     "devDependencies": {
         "@dfinity/agent": "^0.19.2",
diff --git a/tests/end_to_end/candid_rpc/class_syntax/new_candid_rpc/package.json b/tests/end_to_end/candid_rpc/class_syntax/new_candid_rpc/package.json
index 600353dd98..6141803118 100644
--- a/tests/end_to_end/candid_rpc/class_syntax/new_candid_rpc/package.json
+++ b/tests/end_to_end/candid_rpc/class_syntax/new_candid_rpc/package.json
@@ -1,7 +1,7 @@
 {
     "name": "new_end_to_end_test_functional_syntax",
     "scripts": {
-        "test": "if [ \"$AZLE_QUICK_TEST\" != \"true\" ]; then tsx test/test.ts; else echo 'Skipping pretests'; fi"
+        "test": "if [ \"$AZLE_TEST_RUN_ON_RELEASE\" == \"true\" ]; then tsx test/test.ts; else echo 'Skipping pretests'; fi"
     },
     "devDependencies": {
         "@dfinity/agent": "^0.19.2",
diff --git a/tests/end_to_end/candid_rpc/functional_syntax/ethereum_json_rpc/jest.config.js b/tests/end_to_end/candid_rpc/functional_syntax/ethereum_json_rpc/jest.config.js
index 3ab7e2d25e..43cb5d4f5d 100644
--- a/tests/end_to_end/candid_rpc/functional_syntax/ethereum_json_rpc/jest.config.js
+++ b/tests/end_to_end/candid_rpc/functional_syntax/ethereum_json_rpc/jest.config.js
@@ -2,6 +2,7 @@
 module.exports = {
     preset: 'ts-jest',
     testEnvironment: 'node',
+    testTimeout: 100_000_000,
     transform: {
         '^.+\\.ts$': ['ts-jest', { isolatedModules: true }],
         '^.+\\.js$': 'ts-jest'
diff --git a/tests/end_to_end/http_server/ethers_base/src/server.ts b/tests/end_to_end/http_server/ethers_base/src/server.ts
index e7fedb9992..7c4ceeb671 100644
--- a/tests/end_to_end/http_server/ethers_base/src/server.ts
+++ b/tests/end_to_end/http_server/ethers_base/src/server.ts
@@ -65,24 +65,35 @@ app.post(
 app.post(
     '/transfer-from-canister',
     async (req: Request<any, any, { to: string; value: string }>, res) => {
-        const wallet = new ThresholdWallet(
-            {
-                derivationPath: [ic.id().toUint8Array()]
-            },
-            ethers.getDefaultProvider('https://sepolia.base.org')
-        );
-
-        const to = req.body.to;
-        const value = ethers.parseEther(req.body.value);
-        const gasLimit = 21_000n;
-
-        const tx = await wallet.sendTransaction({
-            to,
-            value,
-            gasLimit
-        });
-
-        res.send(`transaction sent with hash: ${tx.hash}`);
+        try {
+            const wallet = new ThresholdWallet(
+                {
+                    derivationPath: [ic.id().toUint8Array()]
+                },
+                ethers.getDefaultProvider('https://sepolia.base.org')
+            );
+
+            const to = req.body.to;
+            const value = ethers.parseEther(req.body.value);
+            const gasLimit = 21_000n;
+
+            const tx = await wallet.sendTransaction({
+                to,
+                value,
+                gasLimit
+            });
+
+            res.send(`transaction sent with hash: ${tx.hash}`);
+        } catch (error: any) {
+            res.status(500).json({
+                success: false,
+                error: {
+                    code: error.code || 'UNKNOWN_ERROR',
+                    message: error.message,
+                    details: error.info || null
+                }
+            });
+        }
     }
 );
 
diff --git a/tests/end_to_end/http_server/fetch_ic/test/tests.ts b/tests/end_to_end/http_server/fetch_ic/test/tests.ts
index ca7d834863..4ce2cc6f82 100644
--- a/tests/end_to_end/http_server/fetch_ic/test/tests.ts
+++ b/tests/end_to_end/http_server/fetch_ic/test/tests.ts
@@ -37,7 +37,7 @@ export function getTests(canisterName: string): Test {
 
                 mainPage = pages[1];
             },
-            10_000
+            15_000
         );
 
         wait('for identity to be set', 5_000);
diff --git a/tests/end_to_end/http_server/ic_evm_rpc/src/server.ts b/tests/end_to_end/http_server/ic_evm_rpc/src/server.ts
index f7363cda51..44ad56ab3f 100644
--- a/tests/end_to_end/http_server/ic_evm_rpc/src/server.ts
+++ b/tests/end_to_end/http_server/ic_evm_rpc/src/server.ts
@@ -83,60 +83,74 @@ app.post(
 app.post(
     '/transfer-from-canister',
     async (req: Request<any, any, { to: string; value: string }>, res) => {
-        if (canisterAddress.value === null) {
-            canisterAddress.value = ethers.computeAddress(
-                ethers.hexlify(await ecdsaPublicKey([ic.id().toUint8Array()]))
+        try {
+            if (canisterAddress.value === null) {
+                canisterAddress.value = ethers.computeAddress(
+                    ethers.hexlify(
+                        await ecdsaPublicKey([ic.id().toUint8Array()])
+                    )
+                );
+            }
+
+            const to = req.body.to;
+            const value = ethers.parseEther(req.body.value);
+            const maxPriorityFeePerGas = await ethMaxPriorityFeePerGas();
+            const baseFeePerGas = BigInt(
+                (await ethFeeHistory()).Consistent?.Ok[0].baseFeePerGas[0]
+            );
+            const maxFeePerGas = baseFeePerGas * 2n + maxPriorityFeePerGas;
+            const gasLimit = 21_000n;
+            const nonce = await ethGetTransactionCount(canisterAddress.value);
+
+            let tx = ethers.Transaction.from({
+                to,
+                value,
+                maxPriorityFeePerGas,
+                maxFeePerGas,
+                gasLimit,
+                nonce,
+                chainId
+            });
+
+            const unsignedSerializedTx = tx.unsignedSerialized;
+            const unsignedSerializedTxHash =
+                ethers.keccak256(unsignedSerializedTx);
+
+            const signedSerializedTxHash = await signWithEcdsa(
+                [ic.id().toUint8Array()],
+                ethers.getBytes(unsignedSerializedTxHash)
             );
-        }
-
-        const to = req.body.to;
-        const value = ethers.parseEther(req.body.value);
-        const maxPriorityFeePerGas = await ethMaxPriorityFeePerGas();
-        const baseFeePerGas = BigInt(
-            (await ethFeeHistory()).Consistent?.Ok[0].baseFeePerGas[0]
-        );
-        const maxFeePerGas = baseFeePerGas * 2n + maxPriorityFeePerGas;
-        const gasLimit = 21_000n;
-        const nonce = await ethGetTransactionCount(canisterAddress.value);
-
-        let tx = ethers.Transaction.from({
-            to,
-            value,
-            maxPriorityFeePerGas,
-            maxFeePerGas,
-            gasLimit,
-            nonce,
-            chainId
-        });
-
-        const unsignedSerializedTx = tx.unsignedSerialized;
-        const unsignedSerializedTxHash = ethers.keccak256(unsignedSerializedTx);
-
-        const signedSerializedTxHash = await signWithEcdsa(
-            [ic.id().toUint8Array()],
-            ethers.getBytes(unsignedSerializedTxHash)
-        );
-
-        const { r, s, v } = calculateRsvForTEcdsa(
-            canisterAddress.value,
-            unsignedSerializedTxHash,
-            signedSerializedTxHash
-        );
-
-        tx.signature = {
-            r,
-            s,
-            v
-        };
-
-        const rawTransaction = tx.serialized;
 
-        const result = await ethSendRawTransaction(rawTransaction);
+            const { r, s, v } = calculateRsvForTEcdsa(
+                canisterAddress.value,
+                unsignedSerializedTxHash,
+                signedSerializedTxHash
+            );
 
-        if (result.Consistent?.Ok?.Ok.length === 1) {
-            res.send('transaction sent');
-        } else {
-            res.status(500).send('transaction failed');
+            tx.signature = {
+                r,
+                s,
+                v
+            };
+
+            const rawTransaction = tx.serialized;
+
+            const result = await ethSendRawTransaction(rawTransaction);
+
+            if (result.Consistent?.Ok?.Ok.length === 1) {
+                res.send('transaction sent');
+            } else {
+                res.status(500).send('transaction failed');
+            }
+        } catch (error: any) {
+            res.status(500).json({
+                success: false,
+                error: {
+                    code: error.code || 'UNKNOWN_ERROR',
+                    message: error.message,
+                    details: error.info || null
+                }
+            });
         }
     }
 );
diff --git a/tests/end_to_end/http_server/large_files/test/auto_tests.ts b/tests/end_to_end/http_server/large_files/test/auto_tests.ts
index 6cbb01e646..2fc0251b79 100644
--- a/tests/end_to_end/http_server/large_files/test/auto_tests.ts
+++ b/tests/end_to_end/http_server/large_files/test/auto_tests.ts
@@ -23,9 +23,10 @@ const autoGenAutoUploadSmallFileInfos: [number, Unit][] = [
 ];
 
 const autoGenAutoUploadFileInfos: [number, Unit][] =
-    process.env.AZLE_QUICK_TEST === 'true'
-        ? autoGenAutoUploadSmallFileInfos
-        : [...autoGenAutoUploadSmallFileInfos, [250, 'MiB'], [1, 'GiB']];
+    process.env.AZLE_TEST_RUN_ON_RELEASE === 'true' ||
+    process.env.AZLE_TEST_RUN_ON_LOCAL === 'true'
+        ? [...autoGenAutoUploadSmallFileInfos, [250, 'MiB'], [1, 'GiB']]
+        : autoGenAutoUploadSmallFileInfos;
 
 const permanentFiles: string[] = [
     'photos/people/george-washington.tif',
diff --git a/tests/end_to_end/http_server/large_files/test/huge_file_tests.ts b/tests/end_to_end/http_server/large_files/test/huge_file_tests.ts
index 47be7ecfa1..97708bed4c 100644
--- a/tests/end_to_end/http_server/large_files/test/huge_file_tests.ts
+++ b/tests/end_to_end/http_server/large_files/test/huge_file_tests.ts
@@ -7,12 +7,13 @@ import { Unit } from '../../../../../scripts/file_generator';
 import { generateTestFileOfSize } from './generate_test_files';
 import { getAutoGeneratedFileName, verifyUpload } from './tests';
 
-const hugeAutoGenAutoUploadSmallFileInfos: [number, Unit][] = [[0, 'GiB']]; // The tests will fail if this array is empty, so for AZLE_QUICK_TEST we will have a dummy entry
+const hugeAutoGenAutoUploadSmallFileInfos: [number, Unit][] = [[0, 'GiB']]; // The tests will fail if this array is empty, so for !AZLE_TEST_RUN_ON_RELEASE && !AZLE_TEST_RUN_ON_LOCAL we will have a dummy entry
 
 const hugeAutoGenAutoUploadFileInfos: [number, Unit][] =
-    process.env.AZLE_QUICK_TEST === 'true'
-        ? hugeAutoGenAutoUploadSmallFileInfos
-        : [...hugeAutoGenAutoUploadSmallFileInfos, [2, 'GiB'], [5, 'GiB']];
+    process.env.AZLE_TEST_RUN_ON_RELEASE === 'true' ||
+    process.env.AZLE_TEST_RUN_ON_LOCAL === 'true'
+        ? [...hugeAutoGenAutoUploadSmallFileInfos, [2, 'GiB'], [5, 'GiB']]
+        : hugeAutoGenAutoUploadSmallFileInfos;
 
 export function hugeFilesTests(origin: string): Test {
     return () => {