OnTriggerEnter2D and OnTriggerExit2D firing within a minimal amount of frames

Hi everyone. Any idea why the two trigger functions OnTriggerEnter2D and OnTriggerExit2D within a couple of frames, even if the two colliders are still intersecting each other. Both objects are moving (adjusted with Time.deltaTime), but OnTriggerExit2D will fire regardless of them still being on top of each other.

 

Maybe your objects are moving away from each other ever so slightly due to physics?

 

Which unity version? (there used to be bug in older versions 4.x, where enter and exit fired multiple times, even though objects were still overlapping)

 

4.6.1 is the version. My initial guess is that the Time.deltaTime adjustment was just enough to make the rather pixel-perfect collision to technically no longer be touching, but there were still situations where it would go almost completely through the object going back and forth on entered and exit. I was able to work around it but still odd.