Well a couple of interesting things with this one on a Mac Pro:
1. USB over Thunderbolt is still broken.
2. My MX Master mouse no longer works properly via Bluetooth. I can re-pair it and it will work briefly, but it eventually loses the connection and will not work again until it is paired again.
Yeah I'm having the same exact problem with bluetooth and my mouse, seems like the bluetooth and 2.4 GHz wifi instability problems have reared their ugly head again