Has (3D) Trigger behavior changed in 5.3?

Hi,
I've just updated Unity to 5.3.1p3 from 5.2.3p1 and have noticed the trigger behavior seems different.
I use spherical triggers on my characters to detect when other characters are nearby which up until now has been fine, but no longer seems to work properly.

I've added debug log calls to OnTriggerEnter and OnTriggerExit and with 5.3 OnTriggerExit is being called multiple times immediately after OnTriggerEnter even though the triggers are still intersecting.

I've searched for other topics on this issue but have only found people having various issues with 2D triggers in 5.3. Not sure if they are related to what I'm seeing.

I double checked and this isn't a problem when going back to 5.2.

Hopefully someone can shed some light on this.

Thanks

 

Looks like it could be related to this: http://issuetracker.unity3d.com/iss...vely-when-switching-is-kinematic-on-slash-off

 

Although stopping my characters from toggling isKinematic didn't seem to make any difference to the problem.

 

Looks like the issue is coming from toggling rigidbody.detectCollisions