to anyone who wonders where the comment reply/vote buttons went too
Go to settings and check off 'show actions bar by default for comments'
For some reason the default is to NOT show the reply button to individual comments resulting in you needing to long press the comment to unhide the reply button.
I think it's a problem with a data upgrade. I.e. how the existing data for the setting is interpreted. For me the exit confirmation settings also changed. I cleared the app data, logged in again and all functions normally. The buttons show by default.