Ok I found another bug :

So I'm playing with mt system and coderus toggle. After a first reboot, no safe mode message and everything is working fine. After rebooting a 2 times, I got the safe mode message. I click on it and then tell it to enable all toggles.
Then if someone call me and I put the phone to my ear, the screen becomes black as expected ... but never go back to a normal state ... !!

Any solutions?

Edit: Try to apply one option of the tweak W ... no more Safe mod message but still this problem

Edit2: Ok by removing the brightness toggle fixes the issue. Is that issue already reported?