I didn't have any problems with Focus point selection but I did notice one new quirk...
When you power up the camera while using (some) 3rd party LP-E6 batteries you'll get a a warning message telling you "Communication with Canon LP-E6 battery is irregular" - "Continue to use this battery?" - "Cancel - OK"
Cancelling shuts down the camera without turning off
the power switch while the "OK" option lets you continue.
I'm presuming nothing's really wrong, just Canon's way of nagging you into using their batteries only