One turn - 30s. Kill the guy blocking the door - well done you have ,,unbugged" the tb.
It's bit annoying but makes this quest even easier to complete. (cuz they block and you can burst a small group of mutants ...)
The strange thing is the mutants (right upper corner group) attack you when you kill some of them on the left side of cave. (super sense of blood?)
But the most bugged quest imo is the one with flares (tb only ... rl didn't work for me[maybe i picked the wrong one on the first try]) and there is also one about a 10mm gun crafting in audytum.