Updated my hub to 2.2.7.126 - poking around the new Rooms UI, it seems that a device can only be added to a single room. This logically makes sense, but I have encountered one problem. I created a room and added a number of devices, then decided to re-organize. I deleted the room (without first removing the devices from it), and the devices were not returned to the list to add to a new room.
Seems like a stale reference might be left behind that might get cleared by the nightly cleanup.
Out of curiosity, does the problem persist after a reboot, or are the rooms available to assigne again afterwards?
This is a completely new thing and they don't really have a lot of use cases flushed out, from what I understand. I suppose a few bugs might be expected as the sort out the best way to put the feature to actual use. I'd expect them to be pretty good about addressing problems in this area. 
Yep - not overly upset about it in any way - just posting the behavior I observed.
@gopher.ny - FYI
Hmm, yeah, that sounds like a bug.
Assigning room from device details page should work. Yes, the downside is that it's one at a time.
Download the Hubitat app
