Launcher window doesn't show

When I start the launcher and then click on the desktop before the window appears the window doesn't appear. The window appears as soon as I let the window show up in any way (hover over taskbar icon, multitasking view, ...).

Steps to reproduce:

1. Start the launcher
2. Click the desktop before the window appears (immediately)

What happens: The window doesn't appear.

What I expected to happen: The window appears without a problem.

 

(I'm not able to provide screenshots because that makes the window appear)