Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
I hope you can add in a preference setting for this as the shift thing is also not ideal. I prefer to launch my sessions directly from the start menu.
I know about the background option but prefer not to use it.
How can I get the old behavior of opening multiple WinSCP windows/instances?
Shiftkey while opening an additional session.