I have one spawn door which works like a charm, so I checked all the mechanics with that one. When I enter the trigger_multiple with my player, the sound plays but the door doesn't do anything.
Check the outputs and names. If you copied and pasted the doors then the names could be the same and things might be confused. Everything that has a name needs a unique name for a unique door. It sounds like an issue with parenting.
If you read the title as a statement addressed to God, the topic of this thread becomes vaginas.
And yeah, it sounds like you haven't parented the door prop to the door brush entity properly. If that's not it, check to make sure that the trigger brush triggers the right door entity, as it might still be set to open the first door. I think I made that mistake once.
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