As described from time to time when I move back to scene animate I cannot activate Control Parms window nor selection sets, layers.. nothing. I have to reset view port from labs and then shortcuts to open it with g works again.
On the side note is there option to go back to old version with channel widget separated from selection sets and other things? instead of having all on this one big additional window on the right of viewport?
This is on linux and wayland so could have something with it, haven't tested much on windows really. Not huge problem just a bit annoying to reset viewport frequently .