I have a SP3 with Windows 10 Anniversary Edition. I have automatic updates disabled but I run Windows Update approximately once a month. Last Friday, I installed all the available updates, one of which was a system firmware update. Ever since then, my tablet won't automatically switch WiFi networks when it goes out of range. For example, I used my tablet at home on Saturday for a few minutes, and then put it back in my backpack and it automatically hibernated. I got to work this morning (50 miles away) and it still thought it was connected to my home WiFi network until I manually "disconnected" from it and told it to connect to my work network, which it normally automatically connects to. This is definitely new behavior with the latest batch of updates I installed, but I can't find anyone else having this issue. Oddly enough, my old 2012 MacBook has the same issue in Windows 7, but I don't think they even use the same brand of WLAN adapter.