I tired from that 2 bugs and always create a new picture for "solve" them.
Square selection, round selection and lasso selection sometimes aren't working.
And sometime screen is shaking from Middle Mouse Button or Space + Left Mouse Button.
If you don't understand, you can see video with bug on my Google Drive => https://drive.google.com/open?id=1FAyrlWIZQHWQhqVgUqSjVi5GJ0GnNfsU
P.S. I see that bugs from v4.0.1x