Spending too much time trying to resolve the issue. I think I'm just going to move on so I can make more progress. I can always come back to this issue later. I'm totally stumped.
Something else of interest is...
AI's use all my sliding doors without the need for door markers. Even the turbo lifts. If I put a weapon inside the turbo lift instead of the teleport, bot opens doors enters, grabs weapon and exits. However, if I replace weapon with teleport, bot opens door and just stands there as if it doesn't know what to do with the teleport. However, if I remove the door, the bot uses the teleport.
Putting a sliding door between a path node and a weapon doesn't confuse bots.
-But-
Putting a sliding door between a path node and a teleport confuses bots.
There's got to be something about a teleport pickup that's different from all other types of pickups.
I found a tutorial on 3d buzz where they set up a door for ai bots too with a teleport in the room. It looked like the only time a bot actually went through the teleport was by accident. It like jumped through so I think it was shot and accidentally went through, or the bot was trying to dodge backwards and ended up going through but I don't think it was purposeful.
Anyway, enough wasted time on this lol, time to move on.
Well, the way it looks: Door and portal = E1 and E2.