Bug 411459

SUMMARY
Latte Dock temporarily hangs if Super Key is pressed a while after it is open.

STEPS TO REPRODUCE
1. Open with Terminal logging + Super Key held
2. Notice that it will show normally the Super + Key shortcuts (note: I've activated the Latte shortcuts at the Control panel)
3. Wait for the following string to show
```
gpg-connect-agent: no running gpg-agent - starting '/usr/bin/gpg-agent'
gpg-connect-agent: waiting for the agent to come up ... (5s)
gpg-connect-agent: connection to agent established
```
4. Press Super key again. It will hang for a few dozen seconds (15-30), then resume operation, until Super is pressed and held again.

OBSERVED RESULT
Latte stops responding: no animations, no response to mouse, and won't respond to neither SIGTERM nor SIGINT.

EXPECTED RESULT
Latte should simply show possible Key combinations with SUPER at each icon's top left corner.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.16.4 (Arch Linux kernel 5.2.10-zen)
KDE Frameworks Version: 5.61.0
Qt Version: 5.13.0