Well, I have a strange one. I have both Roon and JRiver. JRiver connects to the Ultra through the DLNA interface. Before the last update, I could click on the Ultra endpoint listed as an option in JRiver and it would turn green indicating music would now stream there.
But after the Ultra update, I can click til I'm blue in the face and the Ultra doesn't respond. I tried this on a Mac, Linux, and Windows 11. All the same thing - Ultra is dead in the water. But if I first initiate the Ultra with something else...say Roon, then the JRiver DLNA works like it used to and on all platforms.
Crazy, huh?
But the last update fixed my trigger which is working again.......