Comment 3 for bug 1716715

OK, thanks.

"set" output does not reveal any obvious issues.

Just to be sure: Did you try to run Inkscape in ConEmu? While it shouln't you never know if it might cause issues...

Next step would be to debug using gdb and hope there's useful output.
(A compatible versions can be downloaded from [1] and [2] for 64- and 32-bit Inkscape; I can help you set it up later if you want to)

[1] http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-gdb-8.0-2-any.pkg.tar.xz
[2] http://repo.msys2.org/mingw/i686/mingw-w64-i686-gdb-8.0-2-any.pkg.tar.xz