Does it enter ALT mode on short press of video? Does it crash on short or long press of video?
I still do not understand why you have the display of video bitrate.
Today I reinitialized my copy of chdk from svn and rebuilt from scratch. The bitrate still appears on my camera too, but that could be an artifact of me setting up to view it, and not undoing the set up. In your case I don't know. Was the Sd card used in a different camera with CHDK and possibly configured to show this?