Another update on this topic - while NGINX seems to be working well, I
have noted your advice at this point and out of my own curiosity
performed a setup of a CentOS 7 box using Apache 2.4 - which seems to
be working normally, on my Hyper-V as expected.I suppose the
next step will be to see if I can upgrade Apache on the Debian box from
2.2 -> 2.4 and see if that makes any difference at all.