Q: iPad Pro print centre stuck when using task switcher?

When I have the smart keyboard attached and I use the command/tab shortcut to switch apps, I always have the print centre app opened.

If I open the app, it won't let me swipe it away and there's no print jobs waiting.

But if I swipe up using the four fingers gesture on the screen then the print centre app doesn't appear.

I have tried rebooting the iPad and taking the keyboard on/off but nothing works.