diff --git a/chrome/content/zotero/zoteroPane.js b/chrome/content/zotero/zoteroPane.js
index fa3e8929b..a7b1ac9f0 100644
--- a/chrome/content/zotero/zoteroPane.js
+++ b/chrome/content/zotero/zoteroPane.js
@@ -350,6 +350,7 @@ var ZoteroPane = new function()
 		}
 		
 		this.unserializePersist();
+		this.updateToolbarPosition();
 		this.updateTagSelectorSize();
 		
 		// restore saved row selection (for tab switching)
@@ -3618,6 +3619,7 @@ var ZoteroPane = new function()
 	 * Moves around the toolbar when the user moves around the pane
 	 */
 	this.updateToolbarPosition = function() {
+		if(document.getElementById("zotero-pane-stack").hidden) return;
 		const PANES = ["collections", "items"];
 		for each(var paneName in PANES) {
 			var pane = document.getElementById("zotero-"+paneName+"-pane");