diff --git a/src/zen/common/modules/ZenUIManager.mjs b/src/zen/common/modules/ZenUIManager.mjs
index beef37687..4553c5bb6 100644
--- a/src/zen/common/modules/ZenUIManager.mjs
+++ b/src/zen/common/modules/ZenUIManager.mjs
@@ -1510,7 +1510,7 @@ window.gZenVerticalTabsManager = {
       this.navigatorToolbox.after(splitter);
       window.dispatchEvent(new Event("resize"));
       if (!isCompactMode) {
-        gZenCompactModeManager.getAndApplySidebarWidth();
+        gZenCompactModeManager.getAndApplySidebarWidth({});
       }
       gZenUIManager.updateTabsToolbar();
       this.rebuildURLBarMenus();
diff --git a/src/zen/spaces/ZenSpaceCreation.mjs b/src/zen/spaces/ZenSpaceCreation.mjs
index 26690eabf..5792d2120 100644
--- a/src/zen/spaces/ZenSpaceCreation.mjs
+++ b/src/zen/spaces/ZenSpaceCreation.mjs
@@ -219,7 +219,7 @@ class nsZenWorkspaceCreation extends MozXULElement {
           document.getElementById("nav-bar").style.visibility = "collapse";
         }
         this.style.visibility = "visible";
-        gZenCompactModeManager.getAndApplySidebarWidth();
+        gZenCompactModeManager.getAndApplySidebarWidth({});
         this.resolveInitialized();
         let animation = gZenUIManager.motion.animate(
           this.elementsToAnimate,