diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd043a2..6fc5d39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 * Overhauled and cleaned up many icon textures
 
+### Fixed
+* Fixed a client crash with certain inputs to IntTextBox (as used in FTB Chunks waypoint editing)
+
 ## [2101.1.4]
 
 ### Added
diff --git a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/IntTextBox.java b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/IntTextBox.java
index cc17a58..a744b46 100644
--- a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/IntTextBox.java
+++ b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/IntTextBox.java
@@ -1,22 +1,32 @@
 package dev.ftb.mods.ftblibrary.ui;
 
-import dev.ftb.mods.ftblibrary.ui.input.KeyModifiers;
+import net.minecraft.util.Mth;
 
 import java.util.function.Predicate;
 
 public class IntTextBox extends TextBox {
+    // note: empty text and text with only '-' need to be allowed so numbers can be typed (treat as 0)
+    private static final Predicate<String> IS_NUMBER = s -> s.matches("^-?[0-9]*$");
 
-    private static final Predicate<String> IS_NUMBER = s -> s.matches("^-?[0-9]+$");
     private int min = Integer.MIN_VALUE;
     private int max = Integer.MAX_VALUE;
 
     public IntTextBox(Panel panel) {
         super(panel);
         setFilter(IS_NUMBER);
+        setStrictValidity(true);
     }
 
     public int getIntValue() {
-        return Integer.parseInt(getText());
+        String text = getText();
+        if (text.isEmpty() || text.equals("-")) {
+            return Mth.clamp(0, min, max);
+        }
+        try {
+            return Integer.parseInt(text);
+        } catch (NumberFormatException ignored) {
+            return Mth.clamp(0, min, max);
+        }
     }
 
     public void setMin(int min) {
@@ -59,12 +69,4 @@ public void ensureValue() {
             setAmount(max);
         }
     }
-
-    @Override
-    public boolean charTyped(char c, KeyModifiers modifiers) {
-        if (Character.isDigit(c)) {
-            return super.charTyped(c, modifiers);
-        }
-        return false;
-    }
 }
\ No newline at end of file
diff --git a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/TextBox.java b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/TextBox.java
index f92cfdf..a97268d 100644
--- a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/TextBox.java
+++ b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/TextBox.java
@@ -35,6 +35,7 @@ public class TextBox extends Widget implements IFocusableWidget {
     private Predicate<String> filter;
     private Component label;
     private Color4I labelColor = Color4I.WHITE;
+    private boolean strictValidity = false;
 
     public TextBox(Panel panel) {
         super(panel);
@@ -69,6 +70,10 @@ public final void setFocused(boolean focused) {
         }
     }
 
+    public void setStrictValidity(boolean strictValidity) {
+        this.strictValidity = strictValidity;
+    }
+
     public void setFilter(Predicate<String> filter) {
         this.filter = filter;
     }
@@ -172,12 +177,15 @@ public void insertText(String string) {
             }
 
             String newText = (new StringBuilder(text)).replace(selStart, selEnd, filtered).toString();
+            boolean prevValid = validText;
             validText = isValid(newText);
-            if (!text.equals(newText)) {
+            if (!text.equals(newText) && (validText || !strictValidity)) {
                 text = newText;
                 setCursorPosition(selStart + nToInsert);
                 setSelectionPos(cursorPos);
                 onTextChanged();
+            } else {
+                validText = prevValid;
             }
         }
     }
diff --git a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/AbstractThreePanelScreen.java b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/AbstractThreePanelScreen.java
index 7c76faa..0770e5a 100644
--- a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/AbstractThreePanelScreen.java
+++ b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/AbstractThreePanelScreen.java
@@ -145,7 +145,7 @@ public TopPanel() {
             super(AbstractThreePanelScreen.this);
 
             closeButton = new SimpleButton(this, Component.translatable("gui.close"),
-                    Icons.CLOSE, (btn, mb) -> doCancel());
+                    Icons.CANCEL, (btn, mb) -> doCancel());
         }
 
         @Override
diff --git a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/KeyReferenceScreen.java b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/KeyReferenceScreen.java
index a4d8f90..0b61772 100644
--- a/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/KeyReferenceScreen.java
+++ b/common/src/main/java/dev/ftb/mods/ftblibrary/ui/misc/KeyReferenceScreen.java
@@ -27,7 +27,7 @@ public KeyReferenceScreen(String... translationKeys) {
 
         textPanel = new TextPanel(this);
 
-        closeButton = new SimpleTextButton(this, Component.translatable("gui.close"), Icons.CLOSE) {
+        closeButton = new SimpleTextButton(this, Component.translatable("gui.close"), Icons.CANCEL) {
             @Override
             public void onClicked(MouseButton button) {
                 onBack();