Turns out, the XP build is cursed XD ...

[B3HKO]

Nope, the XP build is still broken, throws the same error in the new "NightBuild_2024.12.20_12-19".
Just a suggestion: Since, this is a 3rd issue created, just wait for me to test a build before self proclaim the bug for fixed and close the issue XD
Other Github apps/progs/tools from you shows analogical problems under XP, so I'm assuming it is more of a compiler issue,
than using something unsupported in the code.
What compilers and parameters you use for the XP build?