long story short, I've been trying to do True Pacifist Runs but everytime i got Undyne's letter from her date and when to the Lab door to start alphys date, the cutscene doesnt trigger and doesn't keep the door shut therefore softlocking me.

I've been looking everywhere to try to find a reason why this happens but i cant find anything of note. If someone can help me explain why this happens that would be amazing. if it helps in any way i play on Linux 1.001 patch :D