The available channels for APs are not suitable w.r.t. allowed channels in my region (Europe). There are now disallowed channels in the list while allowed are missing.
2.4GHz includes Ch 14 (Japan) and 5GHz includes Ch 149-165 (e.g. USA & Canada). Meanwhile, I lack allowed 5GHz channels 52-64 (DFS) and 100-140 (DFS).
I am now on the On-premises HW Control, since virtually the same moment as the 1.1b was released. But, it seems like the now obsolete APs on the cloud Control have the same channel selection setup. Luckily, my manually chosen channels remains.
See drop-down lists in screenshots below. This was noted on HW Control WebUI on Chrome on Android.
Edit: Problem solved by rebooting the HW Control device. Strangely, I had it rebooted a couple of times before while re-arranging ethernet cables in the network rack, so I didn’t think another reboot would make any difference.