Stupid Microsoft. They seem to be accelerating their demise in the consumer computer OS market. Incompetent prats.
However, I am not sure that thread is completely accurate. Both my HTPC and Workstation are on Windows version 1709, Build 16299.248. My HTPC is still running as the Master Browser. It can see my Workstation in Windows Explorer > Network. My Workstation can't see my HTPC in Windows Explorer > Network, but I can get to the HTPC shares from my Workstation using a UNC, i.e. //HTPC/Music/.
So I still don't know exactly what is going on. Except that Microsoft no longer wants to be in the consumer market, and is just making it so difficult for users that they will change to something else, or a competitor will develop something else, or we will all just use phones from now on, for which, by the way, Microsoft no longer make an OS. If I was a conspiracy theorist I would say that those in charge of Microsoft are trying to destroy it from within. Really. I mean that.
Oh, another little surprise. With this change I can now see my neighbour's phone under Windows Explorer > Network for some reason. She isn't actually on my network, but a phone shows up called "queenchristine" with a MAC Address and no other information. That is Tina's phone next door. Surprise!