Intersection inconsistency

[helenezspeer]

My app creates an intersection between two MultiPolygons. Each of the two MultiPolygons is a result of combining visible polygon features from a vector tile source.

Sometimes, the same sources at different zooms intersects inconsistently. In the attached example, one of the intersections works as expected while the other fills in the "hole". In both instances, the polygons came from the same vector sources and were combined in the same matter, but from features rendered at different zoom levels.

Here's my example: https://stackblitz.com/edit/vitejs-vite-nkks8h?file=index.html

Since the layers are rendered at 50%, it's possible to see overlaps, and the intersection layer in the "bad" example shows a triangle that makes me wonder if the coordinates are in the wrong order?

Has anyone seen something like this? Any tips?