Hi there,
I realize this is an old thread – but I have had the same issue for months now (with current and previous version) and it drives me crazy. It’s like the window is hidden somewhere. You have to ctrl alt delete to reload.
This can be disastrous when you haven’t saved after a big edit. Did you figure out a solution? Has this happened to anyone else?
I phoned support and they were beyond useless. Very disappointing.