Not that this is a solution, but I finally got Cisco to take notice (thanks to everyone posting in this thread, as I've referenced back to it a few times to show that my cases were not isolated incidents). There is now a bug filed:   https://bst.clou...

I wonder if anyone got any further traction with Cisco TAC on this issue? I had a case opened, but then the phones stopped doing it and I had to close it. If anyone else is running into this, this is where my TAC case ended. If you have phones that a...