From 2bafb358c50d3f2f9ff1886983c4b202dad418be Mon Sep 17 00:00:00 2001
From: nick-delirium <nikita@openreplay.com>
Date: Fri, 13 Oct 2023 12:43:04 +0200
Subject: [PATCH] fix(ui): safe guard for .applyChanges, fixes #1511

---
 frontend/app/player/web/managers/DOM/VirtualDOM.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/frontend/app/player/web/managers/DOM/VirtualDOM.ts b/frontend/app/player/web/managers/DOM/VirtualDOM.ts
index 4295e31fd..35f2ed994 100644
--- a/frontend/app/player/web/managers/DOM/VirtualDOM.ts
+++ b/frontend/app/player/web/managers/DOM/VirtualDOM.ts
@@ -1,6 +1,10 @@
 import { insertRule, deleteRule } from './safeCSSRules';
 import { isRootNode } from 'App/player/guards'
 
+function isNode(sth: any): sth is Node {
+	return !!sth && sth.nodeType != null
+}
+
 type Callback<T> = (o: T) => void
 
 /**
@@ -100,7 +104,9 @@ abstract class VParent<T extends Node = Node> extends VNode<T>{
 		const realChildren = node.childNodes
 		for(let j = 0; j < this.children.length; j++) {
 			while (realChildren[j] !== this.children[j].node) {
-				node.removeChild(realChildren[j])
+				if (isNode(realChildren[j])) {
+					node.removeChild(realChildren[j])
+				}
 			}
 		}
 		/* Removing tail */