Sorry that this isn't an answer, but I was looking for the same thing and would be very keen on any solutions to accomplish this. I.e., sending a signal (maybe via MQTT) to expand a specific camera windows into fullsceen in the remote web Ui3.

I’ve created several camera groups on my main computer (6 in total). However, when I pull up the remote browser Ui3, it’s only showing 2 of the 6 groups. Any ideas why this is happening? I’d like all groups that I created to appear in the remote browser. And, a related question (perhaps) - When I se...