Animator Trigger gets stuck

i got the same thing

for me, this happened when i was coding a draggable object. I had event triggers to handle mouseEnter, mouseExit, mouseDrag, mouseUp. Whenever I dragged an object past another object that had a 'mouseenter' handler, it would trigger it. So i had a boolean condition to ignore the mouseenter handler if I was currently dragging an object. However, I forgot to put the condition in the mouseExit handler also. This caused my slide in and out animation trigger to 'get stuck', resulting in weird transitions.

Once i put the check into the mouseexit handler, the trigger functioned normally again.

Hope this helps, if your situation is similar.