I can’t figure out this probem, because I don’t know about coding or developing the programs.
I only guess vaguely that Microsoft appies the different
rules on window size to Windows10 Korean Edition.
My monitor’s sepecification
Supported display resolutions of Win_KN
(I tested many size of resolutions, but the results
were not changed.)
The other test
I compared the size of the pop-up window
displayed by Win10_EN and Win10_KN.
Befor the test, I clicked the top of thet pop-up
window to enlarge to full-screen size(Win10_KN).
to see the hidden (or compressed) area.
The following is the full screen of pop-up windows
Then I compared the size of the pop-up window
of the Win_EN to the Win_KN.
It is large in width, small in height at Win_KR,
compared to Win_EN.
I don’t know if these tests would be a hint for your
solution, but if you need more tests, I’m willing to