I used to have it occasionally on the official ROM as well. Typically used to happen if during the previous charge, I didn't let the phone fully charge before removing the cable.Been using this rom for a while, excellent job!
However, I'm not sure whether it's the rom's bug but I'm having some problem. Every time I plug the charging cable, it won't charge. In Settings > Battery it shows "connected, not charging". A restart with the phone plugged in will temporarily solve it until the next charge. I tested with multiple combination of cables and chargers but had no luck.