Out of the blue, the current frame from the active timeline will suddenly go full-frame on my monitor, showing nothing on the desktop, and not want to leave. I have to resort to using Windows Task Manager to remove it. It usually occurs when I have left PPro to do something else, like look up something in help, find a file, etc. It will occasionally also run as a full clip as well, but this does not happen often. Usually, it will just be the static frame from the program window at the time. I have looked through the settings and have found nothing amiss that I would expect to cause this phenomenon. It does not seem to be related to the file or sequence type.
My software is up to date. I have a i7-970 hexacore machine running at 3.2GHz with 24GB ram and a Nvidia quadro 3800 card for GPU processing. I generally work in DVCPRO-HD, ALL-I.mov and AVCIntra-100 based files.
Any guesses? Never had this happen before, and I've been using PPro since 2003 in some form or another.
Go into your preferences and uncheck the monitor that you don't want to go full screen.
It happens to me as well ...when Premiere is minimised..
I just click on the second screen if I see it.
Its annoying and I suspect it is triggered by "Auto save" occuring in the background... and that focusses Premiere.
I'll do that; but that doesn't change that it shouldn't happen, or why it happens. I agree that it may have something to do with autosave.