A new bug has come up after the last patch, possibly the one before where a timed trigger will get caught in a loop when a trigger is activated and a triggering object is within the trigger bounds when the trigger activates.
This is reproducible and is created in the following example by touching the Blue Cube to the Red OnEnterTrigger volume. This turns on a green sphere and starts a 4 second timer. At the end of the 4 seconds, the OnTimer turns off the Green Sphere and turns on the red trigger volume again. If you leave the blue cube on the platform, when the red trigger volume comes back it will cause and endless loop of the timer sequence. (Note the timer is not set to repeat and is set to reset when deactivated)
Here is the test world:
Here is the Unity Scene: