For the file configuration

/working/directory/dir/subdir is a directory
/working/directory/aaa is a link to /working/directory/dir/subdir
/working/directory/out.txt is a file

then on Unix

Path.of("aaa/../../out.txt").toRealPath()

returns /working/directory/out.txt but on Windows

Path.of("aaa\\..\\..\\out.txt").toRealPath()

throws

|  Exception java.nio.file.NoSuchFileException: C:\working\out.txt

when it should have returned C:\working\directory\out.txt. This situation appears to occur when a link in the path is followed by "../..". The Windows result appears incorrect.