Have you seen the new cumulative...?...
https://support.microsoft.com/en-us/help/4469342/november292018kb4469342osbuild17763167
December 5, 2018—KB4469342 (OS Build 17763.168)
It says, "Addresses an issue that may cause mapped drives to fail to reconnect after starting and logging onto a Windows device."
I'm unsure that is close enough for a solution, but worth a look.
Hello PCR,
I installed the updates today and I'm now at build 17763.168, it made no difference for the problem described in this thread, I still had to re-enable the workaround to restart FDResPub to see my computer after a restart.
Again the problem is only on the machines that have both Ethernet and Wi-Fi adapters and they are connected to the router via Ethernet.