Fix wrong display of DarkMode on the 2nd monitor #19

Job	Run time
before_build	21s
build_windows_msys2 (Release, x86_64)	5m 2s
build_windows_cmake (Release, x64, amd64)	3m 56s
build_windows (Release, x64)	3m 20s
build_windows_msys2 (Release, i686)	4m 40s
build_windows (Release, Win32)	3m 17s
build_windows_msys2 (Debug, x86_64)	4m 32s
build_windows (Release, ARM64)	4m 18s
build_windows_msys2 (Debug, i686)	3m 59s
build_windows (Debug, x64)	5m 49s
build_windows (Debug, Win32)	3m 47s
build_windows (Debug, ARM64)	3m 6s
	46m 7s

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