I would have to say, no ADDITIONAL problems for Site Designer
There are still some of the old ones around, IE -lagging after constant use for awhile, text editor crashing project sometimes, and a couple of others preview and device view also crash it after acouple of times viewing.
I must also say that I have found something that helps with those issues on Windows11 and that is to run a WINDOWS compatability diagnostic (not site designers) which helps somewhot until the next update then I havetodo it again (Why I don't know. but it does require running compatability mode again)
No issues with any of the other apps I have