To reproduce:
1. Open scene 'Colliderwithbug'
2. Play the scene
3. Hit space bar several times
4. Watch console when moving object hits and exits trigger. OnTriggerEnter2D gets called multiple times and OnTriggerExit2D never gets called
5. Stop scene
6. Select game object 'MovingObjectWithBug' and disable animator
7. Play the scene
8. Hit space bar several times
9. Watch console when moving object hits and exits trigger. OnTriggerEnter2D is called once object hits trigger and OnTriggerExit2D is called when object exits trigger