diff --git a/src/manager/documents.js b/src/manager/documents.js
index 90dcb462d..6506fa299 100644
--- a/src/manager/documents.js
+++ b/src/manager/documents.js
@@ -32,6 +32,9 @@ const PROCESSING_CHANGE_TIMEOUT = 500;
 
 function mapReduce(l, id, fn) {
   const results = {};
+  if (!l || l.length === 0) {
+    return results;
+  }
   for (let i = 0; i < l.length; i++) {
     const x = l[i];
     results[x[id]] = fn(x);
@@ -98,7 +101,7 @@ export const documents = new Svue({
     },
     pendingExisting(docsById, pending) {
       if (!pending) return [];
-      return pending.filter((x) => {
+      return pending?.filter((x) => {
         const id = x.doc_id;
         return docsById[id] != null;
       });
diff --git a/src/util/coalesceHighlights.js b/src/util/coalesceHighlights.js
index b59b17802..6d03921df 100644
--- a/src/util/coalesceHighlights.js
+++ b/src/util/coalesceHighlights.js
@@ -107,7 +107,8 @@ export function coalesceSelectableHighlights(words, highlights) {
         while (textBlock.length > 0) {
           // Go through each text object
           const text =
-            leftoverText + words[seekI].text.toLowerCase().replace(/\s/g, "");
+            leftoverText +
+              words[seekI]?.text?.toLowerCase().replace(/\s/g, "") ?? "";
           if (!textBlock.startsWith(text) && !text.startsWith(textBlock)) {
             // Not a match: abort
             matched = false;