Unusual behaviour with TriggerEnter/Exit and TilemapCollider+CompositeCollider

Not sure if this is a bug or whether I've done something wrong.

For clarity's sake I've put up a demo project that expresses the problem here:

https://github.com/Cerzi/UnityCompositeColliderBugTest

Basically, the OnTriggerExit is fired when a moving collider passes within the tilemap's composite collider. This means that as the square moves across the tilemap collider, trigger enter and exit are called two times each, instead of a single time like one would expect.

Does anyone know of any workarounds for this? it isn't intended I'm guessing?

 

Sorry for old bump but I discovered this and since found the issue, the composite collider has a "Geometry Type" setting which defaults to "Outlines" resulting in the above behaviour, similar to an edge/line collider. Changing it to "Polygons" makes it behave like a solid shape.

 

Where is this setting at?