https://bugs.winehq.org/show_bug.cgi?id=54582
--- Comment #1 from François Gouget fgouget@codeweavers.com --- A look at the values returned by GetNLSVersion() help clarify what's going on:
w8 6020e w10 1507 6020e w10 1607 6020e w10 1709 6020e w10 1809 6020f w10 1909 6020f w10 2004 60305 w10 2009 60305 w10 21H1 60305 w10 21H2 60305 w10 22H2 60305 w11 21H2 60403
So we had trouble when testing -0x100 with 2004 (NLSVersion=60305) because it still supported NLS version 6020f for compatibility with the previous Windows version.
And now the +0x100 test fails on Windows 10 22H2 (60305) because Microsoft backported support for the 60403 NLS version so it is more compatible with Windows 11 21H2.