Auto hide + Closing tab confirmation bug

[julianbarg]

System: Ubuntu 20.04 on X11
Tilda version: 1.5.2

Just noticed that when turning on "Auto hide" from the General tab and "Show confirmation dialog when closing tab" from the Title and Command tab, this causes Tilda to hang up when closing a tab. The popup briefly appears before Tilda is hidden because it is losing focus. But when displaying Tilda again, the popup is gone and since Tilda is still waiting for input from the popup, it is unresponsive.