Huw Davies (@huw) commented about dlls/win32u/font.c:
{ for (i = 0; i < count; i++) {
unsigned int dx = abs( INTERNAL_XDSTOWS( dc, pos[i] )) +
unsigned int dx = abs( width_to_LP( dc, pos[i] )) +
This is making a functional change, not just a name change which is what the commit msg suggests: the former would mirror the width, the latter doesn't.
On that note, your tests could do with exploring the cases where the matrix involves a reflection.