I'm guessing this is one of those shrug your shoulders if you can't repro. I'm running Unity 2018 maybe 1 or 2 versions from the latest.
2D game - change was done not in play mode and the problem persists even after stopping and re-entering play m…
Obviously this would require coding to do.
I'm guessing it's something like this thread (add vertices to a polygon collider):
https://answers.unity.com/questions/624508/how-to-edit-a-polygoncollider2d-vertices-in-code.html
I've never played with i…