Sleeping my Ventura Mac Studio resizes the windows in Cubase 12

Bit of a weird one, but very annoying. Whenever I sleep my Mac Studio and then return to it and carry on with Cubase, I find that the workspace is jumbled up. Usually the main project window has reduced in size, dropped down the screen and moved to the left. Every single time I sleep the Mac.

I’m running Cubase Pro 12 on Ventura 13.1

Incidentally I also get “refusals to sleep” and instant reawakening which I suspect is coming from Cubase but I don’t know how to make everything simply behave in a normal fashion.

Any ideas, anyone?