Maven bug. 1 year + later and still not fixed.

this is my 2nd time failing an uber maven this league, because she decided to summon the bramble valley bear that makes an invisible wall and makes me unable to pass through half the arena / can't damage the nucleus.
150+ chaos x5 for each invitation just so it fails because it's bugged.
it's literally one boss. just disable it maybe..?

https://www.youtube.com/watch?v=GWs9BMQbJSk
here is the bug in place. (not my video)
if the wall passes through the middle of the arena then the nucleus is pretty much invulnerable as well.