The PAN tool keyboard shortcut doesn’t work after zooming in.
I am using Krita 5.0.6 on a fairly fast iMac purchased in 2020 with plenty of ram & disk space. This happened in 5.0.5 too. I don’t think it happened before 5.0.5.
This is my first time posting. If this isn’t the correct place for this question I apologize & will move it
Hello and welcome to the forum 
Do you zoom in with the mouse scroll wheel or do you use the Ctrl+Space+left-click-drag action?
Do you Pan with the Toolbox Pan tool or do you use Space+ ?
There was a bug on Windows where rapid and repeated changes between Ctrl+Space+ and Space+ caused some kind of lockup of those actions.
Hi AhabGreybeard,
I use “command, spacebar” to temporarily switch to the magnification tool. I also use “command+” & “command-” to zoom in & out. (on Mac I think “command” is used in place of “control” in a lot of instances)
I forgot that Macs have the Cmd key instead of the Ctrl key 
The Windows bug I mentioned doesn’t happen on Linux systems so I’m surprised that a Mac seems to have something similar.
All I can suggest is that you raise a formal bug report at:
https://bugs.kde.org/
(Sign up and sign in are needed.)
Please post a link here to any bug report you raise.
Thanks very much for the link to the “Bugs” site. I placed a report yesterday. No response yet but thanks to you, it now has a chance to get in front of some eyes that could do something about the problem.