The weird behaviour I was seeing included:
:Exmight open an empty window
- Use of
-as a shortcut to go up to the parent directory in netrw, would make the entire shell non-responsive (or at least, appear that way)...
:Lexploreopened some weirdly hidden tab (the command appeared to do nothing, but when I
:qfrom vim, it then took me to a netrw 'tab', almost as if it's another tab expect it's not listed under
vim .was just resulting in an empty window with the E17 error message.
This occurred for me when using:
App: Vim 8.2.3020 on Windows 10 Terminal: Windows Terminal Preview Shell: PowerShell 7.1.3 Module: PSReadline 2.2.0 beta 3
I suspect it will be a perplexing issue for someone, at some stage, so see my 'answer' (you can sort of call it that, if you squint a bit), below. If anyone has better work-arounds or mitigations, please let me know!