Has anyone had any luck getting the clock on the ALPSTUGA to automatically sync? When I first paired (commissioned?) the device it got the right time, but after disconnecting/reconnecting power the clock has reset to 00:00 and ticks up from there.

I realise I can set it manually, but would have expected automatic time synchronisation.

The only devices on my Thread network are the new Ikea Matter products plus the ZBT-2. Everything is working perfectly, except for time sync. I do not have an Apple TV, Homepod, or the DIRIGERA hub.

My setup:

HAOS Core: 2025.12.5 / Supervisor: 2025.12.3 / OS: 16.3

This is running in a VM in Proxmox with a ZBT-2 passed through on a USB port.

ZBT-2 running OpenThread RCP 2.4.4.0

Matter Server Add-on 8.1.2

OpenThread Border Router Add-on 2.15.3