Doesn't sync with MIUI 8.3 (Android 7)

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Hey there,
Syncing wit MIUI 8.3 doesn’t work. Even the workarounds in the FAQ about MIUI didn’t work.
Here is my Log:

SOFTWARE INFORMATION
DAVdroid version: 1.4.1-ose (139) Tue Mar 21 15:20:57 GMT+01:00 2017
Installed from: APK (directly)
JB Workaround installed: no

CONFIGURATION
System-wide synchronization: automatically
Account: john.doe@domain.tld
Address book sync. interval: 240 min
Calendar sync. interval: 240 min
OpenTasks sync. interval: 240 min
WiFi only: false
[CardDAV] Contact group method: GROUP_VCARDS
[CalDAV] Time range (past days): 90
Manage calendar colors: true

SQLITE DUMP
android_metadata
| locale |
| de_CH |

settings
| setting | value |
| logToExternalStorage | 0 |

services
| _id | accountName | service | principal |
| 1 | john.doe@domain.tld | carddav | https://cloud.domain.tld/remote.php/dav/principals/users/john.doe/ |
| 2 | john.doe@domain.tld | caldav | https://cloud.domain.tld/remote.php/dav/principals/users/john.doe/ |

sqlite_sequence
| name | seq |
| services | 2 |
| homesets | 6 |
| collections | 9 |

homesets
| _id | serviceID | url |
| 5 | 1 | https://cloud.domain.tld/remote.php/dav/addressbooks/users/john.doe/ |
| 6 | 2 | https://cloud.domain.tld/remote.php/dav/calendars/john.doe/ |

collections
| _id | serviceID | url | readOnly | displayName | description | color | timezone | supportsVEVENT | supportsVTODO | sync |
| 7 | 1 | https://cloud.domain.tld/remote.php/dav/addressbooks/users/john.doe/contacts/ | 0 | Kontakte | <null> | <null> | <null> | <null> | <null> | 1 |
| 8 | 2 | https://cloud.domain.tld/remote.php/dav/calendars/john.doe/contact_birthdays/ | 1 | Geburtstage von Kontakten | <null> | <null> | <null> | 1 | 0 | 1 |
| 9 | 2 | https://cloud.domain.tld/remote.php/dav/calendars/john.doe/persönlich/ | 0 | OwnCloud | OwnCloud | -65536 | <null> | 1 | 1 | 1 |

SYSTEM INFORMATION
Android version: 7.0 (xiaomi.eu)
Device: Xiaomi Mi-4c (libra)

Additional Logs.

It’s definitely a Xiaomi MIUI-issue. It works with vanilla Android. But i don’t know where to search for a solution.

Could solve the problem. It was an issue from upgrading to MIUI 8.3. You have to do a full wipe of the phone.
Here the steps to solve the problem:

• Backup the data with Option “Backup & Restore” in the MIUI-Settings (under Additional Settings)
• Backup with TWRP
• Backup all your data (Music, Pictures, Videos…) - they won’t be in the Xiaomi or TWRP Backup
• Do a full wipe of system, data… in TWRP
• Install the latest weekly build from xiaomi.eu
• Restore from the Xiaomi-Backup
• Install DavDroid - and it will work. It even fixed some other issues i had from the upgrades in MIUI

Of course it will be a bit work, but it’s worth anyway. So always make a Backup and a Restore from the Xiaomi-App from time to time…