This issue is present since about 1803, and is very intermittent - it appears to happen more often with a hybrid shutdown/hibernation (Win 10 x64) and less often with a full shutdown.
Event log gives me WLAN Extensibility Module service errors, but it eventually starts successfully - the wifi does not reconnect, however.
A radio toggle fixes the issue and 8265 reconnects to the known network.
This issue is present on 20.50.0, power management of the radio is off.
Would this be an OS-level issue, or is the driver to blame?
(Win10 drivers are hard, no argument there)