Hi! I just played the game but when I talked to Isadore after interviewing everyone, the list of options was just a stack of about 8 empty "choices". I picked one blindly - turned out to be Dwight. I tried talking to Isadore a few times but got the same issue. I'm running the Windows version on Windows 10.
This is a side-effect of the game being developed very quickly and using a third-party asset without the proper time to test everything. I'm not sure how to reproduce it, though I've seen it happen in youtube playthroughs so I know that it happens.
When you pick an option, are you clicking with the mouse or using the arrow keys and E to select?