[Q/A][ROM][5.1.1] CyanogenMod 12.1 [NIGHTLY]

As there is no official Q&A thread dedicated to the official CM12.1 nightlies, I thought I'd make one myself.

When reporting a problem, include your version number (date of the nightly) and include some screenshots or logs.

General tips to avoid bugs:
-Don't use any custom kernel like ThunderZap, it destroys many fixes
-More to come, feel free to send me any