BioGen - Visible Threat: Finish zone's height is too low?

[WhenTanksFly]

Destroying the finish entrance door then staying on the door doesn't win the mission, presumably because the door hitbox elevates me too far up so I'm technically not in the finish area. In both cases I've witnessed this in a public lobby, I've failed explaining it to the Chinese..;.

where.win.mp4

This same door also has weird interactions with welder, but it's funny and doesn't cause trouble so might as well keep it as is.