I found a game-breaking bug - when you try and do the Tracer story, once you get up to the bit where you need to get Sombra to hack you into the girls' dorms, if you don't have enough money but open and close your phone after trying to buy the ability to enter the girls' dorms it buys it for you anyway. This allows you to get into the dorms and continue along Tracer's story but you are sent into the negative in money, and Sombra doesn't move from where she was or change in any way, which lets you stack this glitch to go deep into debt.
I have no idea if you already knew about this but if you didn't I hope it helped. I performed this in the linux version so that might also affect it.