Debugging Android with Unity 2018

This topic seems to never go away, but rather than add to an older thread, I shall start one anew in the hopes that maybe Unity developers will chime in on why Visual Studio can no longer debug Android applications.

Like many, I have developer settings enabled, debug scripts enabled, etc. All to no avail. Earlier versions of Unity were great. They'd attach fine. Life was wonderful! This new version (Unity 2018.1.0f2), however.... The device simply won't show up in the "Select Unity Devices" dialog.

My phone is a Moto G5 running Nougat.

The version info for adb is
I:\Users\Brian>adb version
Android Debug Bridge version 1.0.39
Version 0.0.1-4500957
Installed as I:\Tools\Android\android-sdk\platform-tools\adb.exe

Please, if anyone from Unity is lurking about, please chime in.

Incidentally, MonoDevelop will allow debugging. Visual Studio is leaps and bounds above it in terms of debugging capabilities, but for those who don't have MonoDevelop, a solution is really needed.

Thanks,
Brian