Well, nevermind. It still isn't fixed. Still hangs on Connecting... from the task tray, but connects fine from the Settings VPN menu. Five different test boxes and two VMs still show no change from before the KB was installed.
Whatever they "fixed" in KB4522355, it wasn't in the task tray GUI. Come'on Microsoft...test your fixes before you deploy. I'd love to write **** software, never fix a critical bug, and still get paid!
odd. the KB resolved it for 3 of the machines I tried it on. Maybe try installing it again? What VPN type are you using ?