Two days after upgrading from V19 to V22 my Cosmo suddenly started to behave strange. Most functionality of the taskbar has been missing. The home screen suddenly only had one page. Taks switching became impossible.
The reason has been, that due to a bug in/after OTA update the device has been struck in initial setup mode, where most functions are locked.
This can be solved by running the following commands in a root shell or with adb:
settings put global device_provisioned 1
settings put secure user_setup_complete 1
Initially I thought I had to perform a factory reset, but then I found the issue on:
https://www.xda-developers.com/broken-navig...ota-update/amp/Mith