Aiming and camera glitch when enabling motion controls in Zelda: Breath of the Wild

It was the same with my switch lite and 1.6.0 botw. Fortunately what helped was powercycling the switch. Actually turning it off and then on (not just to sleep mode). Now it works perfectly fine, like before.

At the time of posting, I don't think there is a solution outside of reporting the bug and waiting for them to patch it in the next version, as 1.6.0 is currently the latest version of the game, but again, that was released April 2019.

I would suggest that this bug is (as you also noticed) specific to the console and version, and the original Switch did experience a similar bug in v1.4.0.

Outside of this, I can't find anything to support the possibility of a roll-back to a previous version of the game, even without an internet connection.