From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 20 Sep 2021 16:25:10 +0000 (+0200)
Subject: Skip bogus selection changes
X-Git-Tag: 5.4.8_dev_1~13
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f868957b0dca3047c09fc646cde7a2264f0e931f;p=GitHub%2FWoltLab%2FWCF.git

Skip bogus selection changes
---

diff --git a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabCaret.js b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabCaret.js
index 61130a3b05..4d2f5a6c58 100644
--- a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabCaret.js
+++ b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabCaret.js
@@ -619,6 +619,14 @@ $.Redactor.prototype.WoltLabCaret = function() {
 			var anchorNode, sibling;
 			
 			var selection = window.getSelection();
+			if (!selection.rangeCount) {
+				// Skip invocations that do not have an active range. This happens if the
+				// user loads a page but has not yet interacted with the page. Such a
+				// selection is the result of a synthetic event without any prior user
+				// interaction.
+				return;
+			}
+
 			if (!selection.isCollapsed) {
 				if (_isSafari && _iOS && _touchstartTarget === event.target && this.utils.isBlockTag(_touchstartTarget.nodeName)) {
 					// Treat this as a collapsed selection instead, because the iOS Safari