Top panel will freeze if close windows very fast.
## Submitted by Haomin Gui
Assigned to **Nick Schermer**
**[Link to original bug (#14840)](https://bugzilla.xfce.org/show_bug.cgi?id=14840)**
## Description
Top panel will freeze if close windows very fast. Cannot select windows tab, or any buttons on the top panel.
Version: 4.13.3
issue