This morning I got some further info on this, and a workaround. It went like this... Got the bug on my external monitor (set as Main). Set the MacBook as Main: bug moved over to the laptop. Set monitor as Main: bug moved back to monitor. Tried changi...

I'm getting the same issue. I'm using a Mac Studio Display as my primary monitor. I'm on MacOS 26.2. Any update on a fix yet as it's quite disruptive, and even closing and re-opening ArchiCAD doesn't resolve it - I seem to have to reboot!