Can't use Omnitool at Tau airlock

[dmg]

Switched over to the Beta when the underwater scenes began in order to make the game playable, but now I have hit a new wall -- I can enter the airlock but am never given the option to swipe the Omnitool despite it being in my inventory (you can't leave the Climber without it). I even watched a play through video for the level and there doesn't appear to be anything I'm missing. Help computer.