[Nexus 5X Original Android Development] fleischbanane:
Thanks for the quick answers. I will flash back to stock with a factory image and then flash my current setup. Sometimes this worked for me in the past with other problems.

EDIT: Now everything works fine. Flashed stock and then back to LOS, FK and OpenGApps, but with new config file:

Include

# Pico+
DialerFramework # Install Dialer Framework
# CalSync # Install Google Calendar Sync (except if Google Calendar is being installed)
GoogleTTS # Install Google Text-to-Speech (Micro+ on 5.0-, Pico+ on 6.0+)
PackageInstallerGoogle # Install Google Package Installer

# Nano+
FaceDetect # Install FaceUnlock
FaceUnlock # Install FaceUnlock
Search # Install Google Search (including includes Hotword, excluding excludes GoogleNow and PixelLauncher)
Speech # Install Offline Speech Files
Hotword # Install OK Google Hotword Enrollment

# Micro+
Gmail # Install Gmail
CalendarGoogle # Install Google Calendar
ExchangeGoogle # Install Google Exchange Services
# GoogleNow # Install Google Now Launcher (requires Search)
# GoogleTTS # Install Google Text-to-Speech (Micro+ on 5.0-, Pico+ on 6.0+)

# Mini+
CalculatorGoogle # Install Google Calculator
ClockGoogle # Install Google Clock
Maps # Install Google Maps
TagGoogle # Install Google NFC Tags
Photos # Install Google Photos
GooglePlus # Install Google+
Hangouts # Install Hangouts
YouTube # Install YouTube

# Full+
Chrome # Install Google Chrome Browser
CloudPrint # Install Google Cloud Print
# Docs # Install Google Docs
Drive # Install Google Drive
Fitness # Install Google Fit
Keep # Install Google Keep
NewsWidget # Install Google News & Weather
Books # Install Google Play Books
PlayGames # Install Google Play Games
Movies # Install Google Play Movies & TV
Music # Install Google Play Music
NewsStand # Install Google Play Newsstand
# Sheets # Install Google Sheets
# Slides # Install Google Slides
# Talkback # Install Google TalkBack

# Stock+
CameraGoogle # Install Google Camera
ContactsGoogle # Install Google Contacts
DialerGoogle # Install Google Dialer
KeyboardGoogle # Install Google Keyboard
Messenger # Install Google Messenger (except on tablet devices)
# PixelIcons # Install Google Pixel Icons
# StorageManagerGoogle # Install Google Storage Manager
# VRService # Install Google VR Services
# WebViewGoogle # Install Google Webview
# PixelLauncher # Install Pixel Launcher (requires Search and Wallpapers)
# PrintServiceGoogle # Install Print Service Recommendation Service
Wallpapers # Install Wallpapers

# Super+
# AndroidPay # Install Android Pay
# DMAgent # Install Google Apps Device Policy
GCS # Install Google Connectivity Services (excluding also excludes ProjectFi)
# Earth # Install Google Earth
# Indic # Install Google Indic Keyboard
# Japanese # Install Google Japanese Input
# Korean # Install Google Korean Input
# Pinyin # Install Google Pinyin Input
Street # Install Google Street View
Translate # Install Google Translate
# Zhuyin # Install Google Zhuyin Input
# ProjectFi # Install Project Fi by Google

# Remove apps (uncomment a line to remove the app)
# BasicDreams # Remove Basic Dreams Wallpaper
# CMAccount # Remove CM Account Application
# CMBugReport # Remove CM Bug Report Application
# CMAudioFX # Remove CM AudioFX
CMFileManager # Remove CM File Manager
CMMusic # Remove CM Music
# CMScreenCast # Remove CM ScreenCast app
# CMSetupWizard # Remove CM Setup Wizard (see Notes for CMSetupWizard)
# CMUpdater # Remove CM Updater
# CMWallpapers # Remove CM Wallpapers
CMWeatherProvider # Remove CM Weather Underground
# DashClock # Remove DashClock Widget (found in certain ROMs)
# Galaxy # Remove Galaxy (also known as BlackHole) Wallpaper
# Hexo # Remove Hexo Libre Theme
# HoloSpiral # Remove Holo Spiral Wallpaper
# NoiseField # Remove Noise Field Wallpaper
# OmniSwitch # Remove OmniSwitch recent apps switcher replacement
# Phasebeam # Remove Phasebeam Wallpaper
# PhotoPhase # Remove Photo Phase Wallpaper
# PhotoTable # Remove Photo Table Wallpaper
# Browser # Remove Stock Browser
# CalculatorStock # Remove Stock Calculator (automatically removed when Google Calculator is installed)
# CalendarStock # Remove Stock Calendar (automatically removed when Google Calendar is installed)
# CameraStock # Remove Stock Camera
# ClockStock # Remove Stock Desk Clock (automatically removed when Google Clock is installed)
# Email # Remove Stock Email Client
# ExchangeStock # Remove Stock Exchange Services (automatically removed when Google Exchange Services is installed)
# MzFileManager # Remove Stock FlymeOS File Manager
# MzPay # Remove Stock FlymeOS Pay system (because MzPay services works only in China)
# MzSetupWizard # Remove Stock FlymeOS SetupWizard
# MzUpdater # Remove Stock FlymeOS Updaters
# MzWeather # Remove Stock FlymeOS Weather (because MzWeather service work only in China)
# FMRadio # Remove Stock FM Radio (not found on all devices or ROMs)
# Gallery # Remove Stock Gallery
# KeyboardStock # Remove Stock Keyboard (automatically removed when Google Keyboard is installed)
# Launcher # Remove Stock Launcher(s)
# LiveWallpapers # Remove Stock Live Wallpapers
# LockClock # Remove Stock Lockscreen Clock Widget
# Studio # Remove Stock Movie Studio
# TagStock # Remove Stock NFC Tags (automatically removed when Google NFC Tags is installed)
# PicoTTS # Remove Stock PicoTTS
# PrintServiceStock # Remove Stock Print Service Recommendation Service (automatically removed when Google Print Service Recommendation Service is installed)
# SimToolKit # Remove Stock SimToolKit
# SoundRecorder # Remove Stock Sound Recorder
# MMS # Remove Stock SMS (automatically removed if Google Messenger and/or Hangouts is installed)
# StorageManagerStock # Remove Stock Storage Manager (automatically removed when Google Storage Manager is installed)
# Terminal # Remove Stock Terminal
# Themes # Remove Stock Theme Engine (will break the Settings Entry and can cause unexpected reboots on some ROMs)
# VisualizationWallpapers # Remove Stock Visualization Wallpapers
# WhisperPush # Remove Stock WhisperPush support