diff --git a/edit/source-editor.js b/edit/source-editor.js
index d20fdb2e..2de7b701 100644
--- a/edit/source-editor.js
+++ b/edit/source-editor.js
@@ -32,7 +32,7 @@ function SourceEditor() {
   $('#header').on('wheel', headerOnScroll);
   $('#sections').textContent = '';
   $('#sections').appendChild($create('.single-editor'));
-  $('#save-button').onauxclick = e => e.detail === 'tpl' && saveTemplate();
+  $('#save-button').on('split-btn', saveTemplate);
 
   const cm = cmFactory.create($('.single-editor'));
   const sectionFinder = MozSectionFinder(cm);
diff --git a/js/dom-on-load.js b/js/dom-on-load.js
index 05e63b9a..89369ef1 100644
--- a/js/dom-on-load.js
+++ b/js/dom-on-load.js
@@ -98,7 +98,7 @@
       prevPedal.classList.remove('active');
       window.off('keydown', splitMenuEscape);
     }
-    if (pedal && pedal !== prevPedal) {
+    if (pedal) {
       const menu = $create(SPLIT_BTN_MENU,
         Array.from(pedal.attributes, ({name, value}) =>
           name.startsWith('menu-') &&
@@ -110,13 +110,14 @@
           setTimeout(splitMenu);
         }
       });
+      pedal.on('mousedown', e => e.preventDefault());
       pedal.classList.toggle('active');
       pedal.after(menu);
       moveFocus(menu, 0);
       focusAccessibility.toggle(menu.firstChild, focusAccessibility.get(pedal));
     }
     if (entry) {
-      prevPedal.previousElementSibling.dispatchEvent(new CustomEvent('auxclick', {
+      prevPedal.previousElementSibling.dispatchEvent(new CustomEvent('split-btn', {
         detail: entry.__cmd,
         bubbles: true,
       }));
diff --git a/manage/import-export.js b/manage/import-export.js
index 31afee1e..57d269ab 100644
--- a/manage/import-export.js
+++ b/manage/import-export.js
@@ -17,8 +17,7 @@
 Object.assign($('#file-all-styles'), {
   onclick: exportToFile,
   oncontextmenu: exportToFile,
-  onauxclick: exportToFile,
-});
+}).on('split-btn', exportToFile);
 $('#unfile-all-styles').onclick = () => importFromFile({fileTypeFilter: '.json'});
 
 Object.assign(document.body, {
@@ -339,9 +338,6 @@ async function importFromString(jsonString) {
 
 /** @param {MouseEvent} e */
 async function exportToFile(e) {
-  if (e.type === 'auxclick' && !e.detail) {
-    return;
-  }
   e.preventDefault();
   await require(['/js/storage-util']);
   const keepDupSections = e.type === 'contextmenu' || e.shiftKey || e.detail === 'compat';
diff --git a/popup/popup.js b/popup/popup.js
index 6e028e3f..1b1f12f3 100644
--- a/popup/popup.js
+++ b/popup/popup.js
@@ -103,8 +103,7 @@ async function initPopup(frames) {
   Object.assign($('#popup-manage-button'), {
     onclick: Events.openManager,
     oncontextmenu: Events.openManager,
-    onauxclick: Events.openManager,
-  });
+  }).on('split-btn', Events.openManager);
 
   $('#popup-options-button').onclick = () => {
     API.openManage({options: true});