Weird Kira book glitch (Could kill when arrested)

Had a very weird glitch last night. I was Kira - passed the notebook to my follower in the last 10 seconds.

I was arrested in the final 4 - nothing was on my person.

Round starts, I'm chained up.

My former follower who was technically Kira said he thinks the game is glitched - can open the book but can't kill anyone.

I then see I still have the book too and I CAN kill criminals with it still AND not have it appear on screen when I'm chained up.

I immediately told everyone to stop when on screen and basically gave myself up, said I didn't want to win this way and to vote me again next round or win on Investigator progress.

Just a really weird glitch - it wasn't even a last second book pass either.