From 9cf6b542e28962aefe9786b15082a30b92275094 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Sat, 3 Jan 2026 08:45:02 -0500
Subject: [PATCH 1/4] Allow clicking in HTML-in-MathML to activate elements
 rather than cause selection in the explorer.  (mathjax/MathJax#3491)

---
 ts/a11y/explorer/KeyExplorer.ts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ts/a11y/explorer/KeyExplorer.ts b/ts/a11y/explorer/KeyExplorer.ts
index 2fe7c85918..b1151cfb16 100644
--- a/ts/a11y/explorer/KeyExplorer.ts
+++ b/ts/a11y/explorer/KeyExplorer.ts
@@ -1941,10 +1941,26 @@ export class SpeechExplorer
   public AddEvents() {
     if (!this.eventsAttached) {
       super.AddEvents();
+      this.addHtmlEvents();
       this.eventsAttached = true;
     }
   }
 
+  /**
+   * Prevent clicks in mjx-html nodes from propagating (so clicks in
+   * HTML input elements or other selectable nodes will not cause
+   * the explorer from processing the click.
+   */
+  protected addHtmlEvents() {
+    for (const html of Array.from(this.node.querySelectorAll('mjx-html'))) {
+      html.addEventListener('click', (event) => {
+        if (html.contains(document.activeElement)) {
+          event.stopPropagation();
+        }
+      });
+    }
+  }
+
   /********************************************************************/
   /*
    * Actions and links

From eb066fce753d1c724ca3773ae73d823c6127460e Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Tue, 6 Jan 2026 08:53:31 -0500
Subject: [PATCH 2/4] Updates to allow keydown and dblclick events to pass
 through to HTML elements as well

---
 ts/a11y/explorer/KeyExplorer.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ts/a11y/explorer/KeyExplorer.ts b/ts/a11y/explorer/KeyExplorer.ts
index b1151cfb16..acda8f1fdb 100644
--- a/ts/a11y/explorer/KeyExplorer.ts
+++ b/ts/a11y/explorer/KeyExplorer.ts
@@ -1953,11 +1953,14 @@ export class SpeechExplorer
    */
   protected addHtmlEvents() {
     for (const html of Array.from(this.node.querySelectorAll('mjx-html'))) {
-      html.addEventListener('click', (event) => {
+      const stop = (event: Event) => {
         if (html.contains(document.activeElement)) {
           event.stopPropagation();
         }
-      });
+      };
+      html.addEventListener('click', stop);
+      html.addEventListener('keydown', stop);
+      html.addEventListener('dblclick', stop);
     }
   }
 

From b5382589fdd337e043e4326a87e3c6d50ce00c28 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@mathjax.org>
Date: Wed, 7 Jan 2026 07:10:40 -0500
Subject: [PATCH 3/4] Update ts/a11y/explorer/KeyExplorer.ts

Co-authored-by: Volker Sorge <v.sorge@mathjax.org>
---
 ts/a11y/explorer/KeyExplorer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ts/a11y/explorer/KeyExplorer.ts b/ts/a11y/explorer/KeyExplorer.ts
index acda8f1fdb..0e22873c60 100644
--- a/ts/a11y/explorer/KeyExplorer.ts
+++ b/ts/a11y/explorer/KeyExplorer.ts
@@ -1947,7 +1947,7 @@ export class SpeechExplorer
   }
 
   /**
-   * Prevent clicks in mjx-html nodes from propagating (so clicks in
+   * Prevent clicks in mjx-html nodes from propagating, so clicks in
    * HTML input elements or other selectable nodes will not cause
    * the explorer from processing the click.
    */

From 44af203f0d598a415ed1f70c59a9bd6f71a5ee8b Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@mathjax.org>
Date: Wed, 7 Jan 2026 07:11:18 -0500
Subject: [PATCH 4/4] Update ts/a11y/explorer/KeyExplorer.ts

Co-authored-by: Volker Sorge <v.sorge@mathjax.org>
---
 ts/a11y/explorer/KeyExplorer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ts/a11y/explorer/KeyExplorer.ts b/ts/a11y/explorer/KeyExplorer.ts
index 0e22873c60..c09c691c4d 100644
--- a/ts/a11y/explorer/KeyExplorer.ts
+++ b/ts/a11y/explorer/KeyExplorer.ts
@@ -1948,7 +1948,7 @@ export class SpeechExplorer
 
   /**
    * Prevent clicks in mjx-html nodes from propagating, so clicks in
-   * HTML input elements or other selectable nodes will not cause
+   * HTML input elements or other selectable nodes will stop
    * the explorer from processing the click.
    */
   protected addHtmlEvents() {