Fix out-of-bounds index in BesQuillService

service.js

@@ -1209,7 +1209,11 @@ class BesQuillService extends BesTreeService {
     })
 
     if (reproofNeeded) {
-      const [leaf, offset] = this.quillInstance.getLeaf(index)
+      const editorLength = this.quillInstance.getLength()
+      const clampedIndex = Math.min(index, editorLength - 1)
+
+      const [leaf, offset] = this.quillInstance.getLeaf(clampedIndex)
+      if (leaf) {
         let domElement = leaf.domNode
         while (domElement && domElement.tagName !== 'P') {
           domElement = domElement.parentNode
@@ -1220,6 +1224,11 @@ class BesQuillService extends BesTreeService {
           this.repositionAllMarkup()
           this.scheduleProofing(1000)
         }, 0)
+      } else {
+        console.warn(
+          'Leaf is null. The index might be out of bounds or the editor content is empty.'
+        )
+      }
     }
   }