feat: Correctly mark tab visibility inside active folders, b=no-bug, c=common, folders

src/browser/components/tabbrowser/content/tab-js.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tab.js b/browser/components/tabbrowser/content/tab.js
-index 836bee14d2b63604688ebe477a5d915a5e99b305..a675aed711560b4a44604fc17478cffa7fb68439 100644
+index 836bee14d2b63604688ebe477a5d915a5e99b305..53b6cb827b1199b314b0e6543055fe7b074b0dfa 100644
 --- a/browser/components/tabbrowser/content/tab.js
 +++ b/browser/components/tabbrowser/content/tab.js
 @@ -21,6 +21,7 @@
@@ -65,11 +65,11 @@ index 836bee14d2b63604688ebe477a5d915a5e99b305..a675aed711560b4a44604fc17478cffa
 +        return false;
 +      }
 +      // Selected tabs are always visible
-+      if (this.selected || this.multiselected || this.hasAttribute("folder-active")) return true;
++      if (this.selected || this.multiselected) return true;
 +      // Recursively check all parent groups
 +      let currentParent = this.group;
 +      while (currentParent) {
-+        if (currentParent.collapsed) {
++        if (currentParent.collapsed && !currentParent.activeTabs.includes(this)) {
 +          return false;
 +        }
 +        currentParent = currentParent.group;

src/zen/common/styles/zen-panel-ui.css

@@ -30,7 +30,7 @@ panel[type="arrow"]:not(#feature-callout) {
   }
 
   @media (-moz-platform: macos) {
-    &:where([nativepopover="true"]) {
+    &:where(:not([nativepopover="true"])) {
       appearance: auto !important;
       -moz-default-appearance: menupopup;
       /* We set the default background here, rather than on ::part(content),

src/zen/folders/ZenFolders.mjs

@@ -1140,9 +1140,7 @@ class nsZenFolders extends nsZenDOMOperatedFeature {
     }
 
     gBrowser.tabContainer._invalidateCachedTabs();
-    setTimeout(() => {
-      delete this._sessionRestoring;
-    }, 0);
+    delete this._sessionRestoring;
   }
 
   /**
@@ -1278,7 +1276,7 @@ class nsZenFolders extends nsZenDOMOperatedFeature {
   }
 
   get #folderAnimationDuration() {
-    return this._sessionRestoring || this._dontAnimateFolder ? 0 : 0.12;
+    return this._dontAnimateFolder ? 0 : 0.12;
   }
 
   async animateCollapse(group) {
@@ -1696,7 +1694,10 @@ class nsZenFolders extends nsZenDOMOperatedFeature {
       for (let i = 0; i < groupItems.length; i++) {
         const { item, splitViewId } = groupItems[i];
 
-        itemsToShow.push(item);
+        let itemVisible = item.visible;
+        if (itemVisible) {
+          itemsToShow.push(item);
+        }
 
         // Skip selected items
         if (selectedTabs.includes(item)) {
@@ -1708,7 +1709,7 @@ class nsZenFolders extends nsZenDOMOperatedFeature {
           continue;
         }
 
-        if (!item.hasAttribute?.("folder-active")) {
+        if (!itemVisible) {
           if (!itemsToHide.includes(item)) {
             itemsToHide.push(item);
           }