nice one, i ran into that bug too ... and i didnt wanted to restart the whole game to check if the bug appears again.
i tried it without the kill enemies cause i kinda wanted to fight against the boss. you can trop with "walk" down next to the boss. it will load the world in but ... even if it happens and ya find the right spot for that is it not worth it to find a spot cause all the enemys will just stand there including the boss. you need to use the killenemies command or else you wont be able to open the door to tali x3
ohwell, it was the experimenting worth. idk what EA did there or what in thee hell causes this bug cause i seen on playtroughs on YT that others had not the problem BUT!!! they had already other characters which i didnt had yet at all. so it might be a bug that peoples do the mission too early? and the game is like "nope, you arent supposed to be here yet D=" or something like that XD?
but ya thanks, it worked nice x3
i assume many peoples will run now into this bug since bioware gave the game out for free on origin ^^