A New Weirdness

I loaded a project and the auto track zoom stopped working properly. I always use this feature and have never seen it quit. If I manually expanded a track and selected another track, the one I expanded would shrink. Sort of like it thought the zoom position was as small as possible. I left the project for an hour and when I returned everything was back to normal. Wondering if this sort of thing has happened to others. Probably a couple bytes had indigestion.