Hey @_talkietoaster, thanks for the very detailed report!
Let’s see. I can’t think of something super obvious. We haven’t seen just occasional issues on this, they usually have a cause.
One very common pitfall is that people forget to add an EventSystem in the scene, that disables the UI and makes it unresponsive. I don’t think it’s your case, but could it be that occasionally the EventSystem fails to initialise?
But from that screenshot, I see you have no Worlds either. So the Connect button is disabled because of that, and the Refresh button is disabled usually when the UI is trying to connect and hasn’t received response, yet. Then it enables allowing you to retry.
Ah, one thought: do you have Enter Play Mode Options on? If so, that might be the cause.
We are not fully compatible with it in coherence 0.10 series, so sometimes it can cause the UI not to find worlds. If it’s on, then try one thing: when the issue happens, try changing a script and triggering a recompilation, instead of restarting Unity.
If the UI starts working again, then it’s definitely that.
(PS: the good news is that we are fully compatible with that option in coherence 1.0, due end of this month)