Yep. I've gotten dialogue about getting books from the library as well as told to go to the infirmary by Zarya. After the second time I drank with McCree I also got dialogue about going back to Mercy for another pill even though I never went to her in the first place.
The main building, the library, and the infirmary will not unlock no matter what I try. Its gotten to the point where I can't progress many of the routes anymore. I also can't go to the Monday class anymore because I can't get the stuff from the infirmary. Any insight from anyone?