Seems that it's been an issue for a while, but Alice's quest seems to be bugged on the "Travel Downtown on Friday" part since I've gone downtown on fridays several times and danced with her (and visited her in adrian's room) a few times now. Either it's bugged or I'm missing something.
Alice quest is not bugged, is just that the continuation hasn't been implemented yet. Right now it ends when you decide to either share or not at the club. All 3 scenes from both routes and the Halloween event are repeatable.
In regard to Katarina, no, reloading a save doesn't break it, you need to have sex with her at the terrace 3 times before arresting Mario, otherwise she is still not fully seduced and will say you ruined her life and that will end her interactions, same if you dont seduce Emma and arrest Mario.
I'm aware of Katarina. The issue is that reloading a save has made doing that impossible because even though I've interacted with her as I should plenty of times in Mario's office, even after waiting two weeks, she still acts as if I haven't done anything to her (indeed, Emma is in the Terrace now at all times and doesn't even show up in the Sauna anymore). Even when Katarina did show up in the Terrace, she didn't have the progression option.