To those that are having the mode changing problem, try this:

Slowly turn the lens as slow as possible until it change mode and stop right away. Do your normal ride. Try this for a week and see if it keeps changing mode.

After that, try again slowly turn the lens until it change mode and then rotate an additional 60 degree (same rotational direction) from that point. Leave it there and do your normal ride. Try this for a week and see if this fix the problem.

I'm also interested to know because it did for me.