As far as I know nandroid backup taken in F2FS doesn't work with EXT4.
You can backup your apps using Titanium backup and copy the internal to pc. After format recopy it back to phone and restore your apps.
I think play service drain is due to the mobile radio active bug. Drain is so high comparing with other ROMs even after using the Magisk module for enabling doze for play services. I even tried switching to other Modems but I couldn't fix the issue.
Sorry for the bugs. I'm using Carbon ROM as my daily driver right now due to some weird battery issues with Sultan's.
Camera app is working fine here. Check permission of camera app. Also try wiping the data of the app.
Damn I totally forgot to check the navigation bar. But accents are working...
Mod updated for Aug. 07, 2017 build
Added modified icon for camera
Added white navigation bar (If you don't need it, remove system/priv-app/SystemUI folder from...