Just ran into this today. I swear it was working in sandbox (where I found out by accident). Now toggle zoom makes Bebop continuously flex his arm lol.
I hope the intent is for it to work with toggle zoom. My old man hands already can't aim as it is.
I can't say what lane but I encountered the same issue tonight using 1 and hitting a bush(?)/terrain near the stairs at a T1 tower. Enemy team had a good laugh.