diff --git a/chrome/content/zotero/collectionTree.jsx b/chrome/content/zotero/collectionTree.jsx
index a0fb6f3eb4..6075aa211d 100644
--- a/chrome/content/zotero/collectionTree.jsx
+++ b/chrome/content/zotero/collectionTree.jsx
@@ -2092,7 +2092,7 @@ var CollectionTree = class CollectionTree extends LibraryTree {
 	/**
 	 * Persist the current open/closed state of rows to a pref
 	 */
-	_saveOpenStates = Zotero.Utilities.debounce(async function() {
+	_saveOpenStates = async function() {
 		var state = this._containerState;
 		
 		// Every so often, remove obsolete rows
@@ -2134,8 +2134,8 @@ var CollectionTree = class CollectionTree extends LibraryTree {
 		}
 		
 		this._containerState = state;
-		this._storeOpenStates = state;
-	});
+		this._storeOpenStates(state);
+	};
 	
 	_storeOpenStates = Zotero.Utilities.debounce(function(state) {
 		Zotero.Prefs.set("sourceList.persist", JSON.stringify(state));
diff --git a/chrome/content/zotero/zoteroPane.js b/chrome/content/zotero/zoteroPane.js
index 41bda76153..af183c22d8 100644
--- a/chrome/content/zotero/zoteroPane.js
+++ b/chrome/content/zotero/zoteroPane.js
@@ -1219,7 +1219,7 @@ var ZoteroPane = new function()
 			}
 			
 			if (this.itemsView && this.itemsView.collectionTreeRow && this.itemsView.collectionTreeRow.id == collectionTreeRow.id) {
-				Zotero.debug("Collection selection hasn't changed");
+				Zotero.debug("ZoteroPane.onCollectionSelected: Collection selection hasn't changed");
 
 				// Update toolbar, in case editability has changed
 				this._updateToolbarIconsForRow(collectionTreeRow);