I do not remember that. Perhaps they spent only 10 seconds on it as opposed to 30. Or maybe because it is an affront to logic that it would not have one has caused people to wipe it from their memory.

On the Gail situation. 1. She has been in the elevator how long and they can't spend 30 seconds showing that she can't reach an escape hatch at the top for some reason? Wedged shut, just out of reach, too small, etc.
2. She only tries once with the note? I realize she had a fit of rage and destroyed the bot. Maybe…