Left and right green collision masks has the same mode and type: Automatic Precise (Slow). Both has top left origin. Purple object has Automatic Rectangle mask, top left origin.
Collision event in square purple object (with common parent of green slopes) does not fired for left case but fired for right case. Why is that?
I workaround this issue by using left slope in place of right with Flip X checked. But if anyone can explain this behavior it would be great.