Imports aren't properly resolved from UNC paths containing symlinks on Windows

So I tried building qbs inside a Docker container, where the qbs sources were located at C:\qbs, which itself was a symlink to a directory like \\?\ContainerSomethingSomething\Foo\Bar

qbs fails to import the scannerplugin.qbs file from plugins/scanner/cpp/cpp.qbs, saying that \ContainerSomethingSomething\Foo\Bar does not exist (apparently the
? prefix gets stripped somehow).

So, some path manipulation somewhere is not handling UNC paths properly.