Begin/End overlap issue

Did you really replicate it 100%? A 1.6KM x 1.6KM Trigger Volume?

Because I had a friend try it and he got the same.

I made a simple level with a setup that give me the problem.

Test level

I tried what you suggested and it seems to worked as intended. Though the problem isn’t what happens after it is triggered, but why it triggers multiple times when crossing the edge.