The press point of the resize scenarios was a gap outside the frame, which
is KDE's resize zone. On Windows there is no invisible border on the top
of a window, so a press there reached the desktop. Platform.resize_grab
gives each port its own point; KDE keeps the gap outside the frame.
The audit behind the docstrings of Platform: what each member promises
to both ports, what each port answers for another reason, what each
finding of the review turned out to be, and what is left to run on a
KDE VM and on Windows.
LGUG2Z