New Chromecast devices not being added as devices

For some reason in the chromecast integration beta all my google devices are discovered, but some devices aren't being added as devices even though they are ticked. All devices discovered appear as "in use" when doing the discovery.. Is that right? I don't recall seeing that before.

Existing devices that have been previously added as devices by the app work in rules.. But the devices that haven't been added as devices don't show in rules..

Why are some devices not being added as devices. I think it's newer devices I've bought so I guess hubitat stopped adding at some stage? I have nest mini that were added, then some that haven't been so it's not device specific.

I'm reluctant to remove the app and add it again as I feel it may break my existing rules with notifications?

Well I removed the app and readded it. The google home that wasn't being added as a device is now working.. So case solved, but problem still unknown. I removed all references of voice to text in rules as I was worried I could have got corrupt rules.. Hopefully don't have to do all this again in a long time.