Hopefully it is me being stupid...again!
Just upgraded to the latest Lua Fix Experimental build on my EOSM.
Have Dual, ETTR and Silent modules switched on.
SET triggering of ETTR doesn't work: double half shutter press does.
When attempting to use SET to trigger ETTR I see the animation circle attempting to run and if I let it run it triggers a Canon screen.
I've never had an issue with SET triggered ETTR before.
Is it me?