From 778b35de0958140e7f62f60b52c00807d65326c2 Mon Sep 17 00:00:00 2001
From: Brad Simpson <brad.simpson@kineo.com>
Date: Tue, 31 Mar 2026 14:26:15 -0600
Subject: [PATCH] Fix: Clear selection after programmatic focus to prevent
 Firefox text selection bug (fixes #843)

---
 js/a11y/browserFocus.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/js/a11y/browserFocus.js b/js/a11y/browserFocus.js
index 1bd96e2d..e8f6a96b 100644
--- a/js/a11y/browserFocus.js
+++ b/js/a11y/browserFocus.js
@@ -71,6 +71,10 @@ export default class BrowserFocus extends Backbone.Controller {
     if (!element) return;
     // refocus on the existing active element to stop jaws from scrolling
     this.a11y.focus(element, { preventScroll: true });
+    // Firefox sets a persistent selection anchor when focus is assigned
+    // programmatically, causing text to be unexpectedly selected on subsequent
+    // clicks. Clear any selection to prevent this.
+    window.getSelection()?.removeAllRanges();
   }
 
   /**