So I just spent several minutes jumping into a vehicle and out of a vehicle. 5 taint reports on load. Getting into combat before getting into a vehicle, getting into combat while in a vehicle, getting out of a vehicle while in combat, etc. I used /console taintlog 2 to get a full taint report. I experienced exactly 2 taints in roughly 5 minutes of playing with vehicles. On a side note the chat mod I'm using had several thousand taint reports in that same period. No taint errors reported in the ingame chat frame.
So does this taint? Yep
Is two taints in addition to the 5 on load an issue? I highly doubt it.
Going to work back on the vehicle exit functionality.
EDIT: Vehicle Exit button code working properly now, just working on getting the anchoring done to look nice. Button size variable implemented. Secure code implemented (I think).
TODO:
I don't like the way the textures are looking on the exit button so I'm looking into getting it to match the actual bar. Need to modify the hotkey text to not be gigantic.