Comment 5 for bug 168247

I could not reproduce it either. Changing H or V often alters X and Y,
but changing X and Y did not change H or V when I was paying attention.

I am forced to the conclusion that I mis-remembered exactly what was
changing by itself, when I was resizing and moving my objects, because I
was frustrated by my expectation that a number I typed in exactly, would
remain stable.

On the other hand, I did find an item in the Inkscape Preferences, under
Transforms: "Scale stroke width". Turning that OFF, makes straight lines
(in any orientation) keep their stroke width when I move or resize them.
It worked for more complex shapes also. This item would seem to answer my
plea for a no-scaling mode.

This is beginning to sound like a luser error, not a bug. My apologies
for wasting your time.