Update cron schedule for candidate release check to run on Tuesday at 4:59 AM

src/browser/base/content/ZenUIManager.mjs

@@ -212,6 +212,31 @@ var gZenVerticalTabsManager = {
     return this.__topButtonsSeparatorElement;
   },
 
+  animateTab(aTab) {
+    if (!gZenUIManager.motion) {
+      return;
+    }
+    const isLastTab = aTab.nextElementSibling === null;
+    gZenUIManager.motion.animate(
+      aTab,
+      {
+        opacity: [0, 1],
+        transform: ['translateY(-20px)', 'translateY(0px)'],
+        marginBottom: isLastTab ? [] : ['-20px', '0px'],
+      },
+      {
+        duration: 0.2,
+        type: 'spring',
+        bounce: 0,
+      }
+    ).then(() => {
+      aTab.style.removeProperty('margin-bottom');
+      aTab.style.removeProperty('transform');
+      aTab.style.removeProperty('opacity');
+      aTab.style.removeProperty('filter');
+    });
+  },
+
   get actualWindowButtons() {
     // we have multiple ".titlebar-buttonbox-container" in the DOM, because of the titlebar
     if (!this.__actualWindowButtons) {

src/browser/base/content/zen-styles/zen-animations.css

@@ -56,21 +56,6 @@
   }
 }
 
-@keyframes zen-new-tab-appear-vertical {
-  0% {
-    opacity: 0;
-    transform: translateY(-25px);
-  }
-  60% {
-    opacity: 0.8;
-    transform: translateY(4px);
-  }
-  100% {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
 @keyframes zen-main-app-wrapper-animation {
   from {
     opacity: 1;

src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css

@@ -58,12 +58,6 @@
   #tabbrowser-arrowscrollbox {
     min-height: fit-content !important;
   }
-
-  #vertical-pinned-tabs-container, #tabbrowser-arrowscrollbox {
-    .tabbrowser-tab[fadein='true'][zen-initial-fadein='true'] {
-      animation: zen-new-tab-appear-vertical 0.2s cubic-bezier(0.4, 0.0, 0.2, 1);
-    }
-  }
 }
 
 :root[zen-window-buttons-reversed='true'] .titlebar-buttonbox-container {