Yeah, I had the same bug.
I'm guessing the debuff is just a indicator for some in game variable that we don't have access to.
I exited the game, and set the 24 hour cycle to 10 minutes and waited for 4am to roll around, and everything started working as normal, so at least there is no permanent damage.
I need to either figure out how to really remove the daily quest limit or just remove the modlet, otherwise its going to be confusing.