diff --git a/packages/ckeditor5/src/custom_watchdog.ts b/packages/ckeditor5/src/custom_watchdog.ts
new file mode 100644
index 000000000..dd3060cbf
--- /dev/null
+++ b/packages/ckeditor5/src/custom_watchdog.ts
@@ -0,0 +1,20 @@
+import { CKEditorError, EditorWatchdog } from "ckeditor5";
+
+const IGNORED_ERRORS = [
+    // See: https://github.com/TriliumNext/Trilium/issues/5776
+    "TypeError: Cannot read properties of null (reading 'parent')"
+]
+
+export default class CustomWatchdog extends EditorWatchdog {
+
+    _isErrorComingFromThisItem(error: CKEditorError): boolean {
+        for (const ignoredError of IGNORED_ERRORS) {
+            if (error.message.includes(ignoredError)) {
+                return false;
+            }
+        }
+
+        return super._isErrorComingFromThisItem(error);
+    }
+
+}
diff --git a/packages/ckeditor5/src/index.ts b/packages/ckeditor5/src/index.ts
index 17b2c775e..a6b193477 100644
--- a/packages/ckeditor5/src/index.ts
+++ b/packages/ckeditor5/src/index.ts
@@ -4,7 +4,7 @@ import "./theme/code_block_toolbar.css";
 import { COMMON_PLUGINS, CORE_PLUGINS, POPUP_EDITOR_PLUGINS } from "./plugins.js";
 import { BalloonEditor, DecoupledEditor, FindAndReplaceEditing, FindCommand } from "ckeditor5";
 import "./translation_overrides.js";
-export { EditorWatchdog } from "ckeditor5";
+export { default as EditorWatchdog } from "./custom_watchdog";
 export { PREMIUM_PLUGINS } from "./plugins.js";
 export type { EditorConfig, MentionFeed, MentionFeedObjectItem, ModelNode, ModelPosition, ModelElement, WatchdogConfig, WatchdogState } from "ckeditor5";
 export type { TemplateDefinition } from "ckeditor5-premium-features";