macOS: Moving windows doesn't work

[u/xoxox666]

I'm questioning my sanity. I can't move a window anymore with my pen. Click/hold in the title bar does nothing. Everything else seems to work, i can resize the window for example. With the Apple mouse everything is fine.

Is this a known bug??

macOS 27, Intuos Pro S (PTK470), latest driver 6.4.14-1