Callout at borderline forgets to override arrowSkin

This is a very strange error and I did not find its cause in the code.
Maybe Josh, thanks to your experience, you don’t have to spend a lot of time fixing
https://www.youtube.com/watch?v=fbWz3IbHTgM
The opened callout first thinks that its direction is up, but then discovers that it does not fit. And changes direction, but does not change arrowSkin