I recently began using an Edelkrone rig, with a video-camera style hand-grip which leaves the hand too far away to trigger the conventional rec start/stop button on the back of a 5dmk3. As a result, in the standard Canon menu, I enabled video record to be triggered by either the standard button, OR the shutter button itself.
Now, all works well, EXCEPT: When recording video with the ML overlays visible, they instantly disappear upon rec start, and are replaced with a text readout only when recording is triggered by the shutter button (although everything still functions as normal when triggered with the standard button).
The text displayed reads: HH:MM DISP0RAW NEUT T=30C BAT=44 MVI-3388
This information is also displayed (presumably intentionally) when half-pressing the shutter button in LV.
Perhaps this is due to some customisation I've made, but those are all only switching on/off overlays. I've checked and this happens whether or not I have any modules loaded.
I'm running "magiclantern-v2.3.NEXT.2013Sep07.5D3113" on a 5dmk3.
Please let me know if you would like any more info on this.
With many thanks!