strange zooming problem in bsplayer

[xlv600]

Use [Num 5] key to restore full screen parameters to default.
I'm quite sure it's your problem, there are so many shortcuts now (90 in v0.86) that it can be difficult to press a key inadvertently.

And remember, a little help on default key assignements is provided thru [F1] key (and look, it's a scrolling window )

Hope it helps