Hi ButchZ
Thank you for your suggestions and for taking the time to watch my videos and to respond

You are of course right, I could disable the sound in Control Panel, I could also just turn off my loudspeakers, but I really don't want to do either. Thousands of other programs can to keypress-mousemove without sound, so this is definitely something the programmers should fix. I won't call it an error, it's just annoying.
#6 is definitely an error! Or actually two errors, but I guess they are related. This is the current newest version 4.069, first error is the dialog that doesn't disappear after clicking [OK], Second error is of course the actual program crash. Newest version... this has not been fixed as my video shows.
#7 You're not supposed to press enter after changing the values. The procedure for changing the size of multiple items should be the same for the first and the last change. It would be stupid if I had to think "This is the last change so now I have to do something special". I didn't press Enter after the first two changes and it's not necessary after the third one as well. I know because the error isn't persistent, sometimes it happens, sometimes it doesn't. At many occasions it just works as it should (without pressing enter), but sometimes it moves my circles as the video shows.
Another funny thing is, that the move cannot be restored with "Undo", Undo just restores the sizes not the placement.
All the best
Jorgen