I used Nightly.2016Dec19.5D2212 for around a month and it was very good, amazed by the raw quality.
My workflow was raw2cdng (1.7.9 to produce 16-bit files) then Revolve to produce cineform then After Effects for what it does.
All worked fine, two bugs;
1. When previewing a still photo and zooming, the zoom goes all the way in (possibly intentional)
2. The sound would have a clipped noise lasting perhaps less than 1 sec somewhere, normally at the start, of a recording
Ive changed to Nightly.2017Mar12.5D2212 and found the following:
A. Point 1 above still happens, so perhaps intentional but annoying
B. I thought point 2 had stopped but in the 10 clips or so this evening to test/play, the noise happened in one or two
C. Taking a still (any mode, no ML, just power on and take a photo) when the preview appears on screen, for a moment it displays as normal (i.e. as canon firmware would show it) but then the screen breaks up and states the error "raw error, falling back to yuv overlays" before going dark.
D. When in liveview ML, using the zoom buttons to zoom in to allow focusing, sometimes gives me black and white/green/b&w noise
E. I have the magic zoom focus window set to focus ring mode, medium size, 3:1. With 2016Dec19, during recording i could adjust the focus ring to bring up the window, however in Mar12 i can only get it up (!) when not recording.
Perhaps some of these are known bugs (A i have seen mentioned a few pages back), others may be new. Perhaps somebody can advise if its just a settings issue?