diff --git a/qt/aqt/browser/sidebar/tree.py b/qt/aqt/browser/sidebar/tree.py
index 97ab95a23..4c83aea72 100644
--- a/qt/aqt/browser/sidebar/tree.py
+++ b/qt/aqt/browser/sidebar/tree.py
@@ -688,7 +688,7 @@ class SidebarTreeView(QTreeView):
                 full_name = head + node.name
                 return lambda expanded: set_tag_collapsed(
                     parent=self, tag=full_name, collapsed=not expanded
-                ).run_in_background()
+                ).run_in_background(initiator=self)
 
             for node in nodes:
                 item = SidebarItem(