Came across a bug. It did happen while using checkpoints, so I'm not sure if it's valid or not, but I feel it needs to be addressed.
Sunday, August 11th where you get to talk to Rio & Sofia, Patel, Nadir, etc. Its annoying that once you interact with each of them once, when you checkpoint back whatever character you last interacted with disappears as an option. Its annoying when you're deliberately just check pointing so you can see everything, rather than replaying again and again. So, changing it so that they are always selectable would be great.
However, the bug is that if you do checkpoint back again and again eventually you cannot progress after you've finished whatever scene you've done.
Again, its using a cheat function and I don't know if you care to fix bugs due to that, but I'm reporting it anyway just in case.