@Maxotics
"2. DO NOT use USB"
I've never used USB with TL installed.
(But I'm going to try..)
"3. If you go into photo mode, remember to TURN OFF your 24FPS, or whatever, video mode setting."
I've never used 24FPS, as we use PAL in Europe which is 25fps. The only thing I changed was fps ovverride to record time lapses, great function, but then I always set it to off; in my experience a "clean" setup, after a fresh install, doesn't stop the bug from occurring.
I tried three different memory cards, one sd and three micro sd with adapter. Bug showed up in the same way.
I've just finished testing with another SD, never used before.
PC format of the card>Canon format> download and copy latest TL>On camera flag to make bootable>extended lens>turn on> BUG present.
What is really interesting imho, is the repeatability of the bug with the lens position of the 11-22 at startup.
Lens extended>turn on>bug ON (100%), retract> extend> bug OFF.
Lens retracted>turn on> extend> bug OFF.
Lens extended>remove SD>turn on>bug OFF(100%)
When I bought the M it had the old firmware, but the 11-22 worked perfectly, even if they updated the firmware also to increase the 11-22 compatibility. I didn't have any issue, apart from the slower AF.
Investigation continues.
Ciao to everybody
Stefano