I would not bet on that Peter. I had to remove one of Tradfri powersocket because it was periodically leaving Zigbee mesh (and causing other Zigbee devices disconnected but since Athom deciced not to implement route mesh, it’s guess only) + I kept one in the network but even it’s non-battery router, it’s showing last seen values pretty old. So I would say, there is some bigger problem with IKEA devices as such. I even tried to update firmware on them via Zigbee2Mqtt, it’s kind of working but still it’s disturbing (the last seen value).
And one of the Tradfri has been even added as end-device, I had to fully remove it and add it - then it was added correctly as router
