Not sure if this has been reported or not but, can anyone confirm this:
With ML on, on video mode, if you zoom in, the exposure shifts about +1eV.
This is highly apparent on the highlights when using cinestyle. Set it so you have a large portion of the frame that almost clip the highlights. (set it so that you clip the highlights at 1x zoom, then go down until it doesn't clip) When you hit zoom, go to the highlights and it will clip.