I have my phone rooted and locked with joker's skinny rom. I use bootstrip to flash it. I think it would work on on stock but don't know. Just go into recovery, backup and flash it. If you phone doesn't boot then go into recovery and restore your backup.
I really don't know as I have not seen that at all. What roms are you using? Are you unlocked? I'm on a joker skinny locked. Are you seeing this with any other themes? Can you flash the Quantum rom fine?
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