Triggers not responding

Don't you love when an object has clearly been set to return or change to "Normal" when a user double clicks another object, and it still doesn't work as the slide transitions to a different layer? Excellent. The trigger is also at the top of the object triggers, so there's no reason why it shouldn't be working along with all objects being rightly identified in the trigger.

Any precedent to this?

(Can't share project as it's information-sensitive)