This discussion may contain spoilers!
Right after killing the zombie in the shed there are a couple of questions asked by the group. My cursor turned invisible and I couldn't answer both questions since I ran out of time. I replayed this scene 3 times and it happened to me twice, my suspicion is that when you rapidly click to bash the zombie's head the cursor doesn't load and remains stuck and invisible. The one time I waited for the bash cursor the bug didn't happen. Also I'm wondering if there is a bug when the guy asks me "are you hungry?" since there was a significantly long pause and no reply options.