Canon 5D mkiii Magic Lantern version: Nightly.2015Apr28.5D3123. using Canon 24-105mm L IS USM
After shooting in MLV format (1920x1080), Canon's exposure meter on the bottom of the screen no longer updates. Normal metering functionality is restored after the camera is turned off and then on again. This "freezing" was also happening with the autofocus, but the autofocus functionality has since been restored (although I'm not sure why).