diff --git a/extensions/mentions/js/src/forum/utils/selectedText.js b/extensions/mentions/js/src/forum/utils/selectedText.js
index 46e476b16..2b18cb6be 100644
--- a/extensions/mentions/js/src/forum/utils/selectedText.js
+++ b/extensions/mentions/js/src/forum/utils/selectedText.js
@@ -4,7 +4,7 @@
 export default function selectedText(body) {
   const selection = window.getSelection();
 
-  if (selection?.rangeCount) {
+  if (!selection.isCollapsed) {
     const range = selection.getRangeAt(0);
     const parent = range.commonAncestorContainer;