https://bugs.winehq.org/show_bug.cgi?id=39856
--- Comment #3 from sworddragon2@aol.com --- With my default system language (LANG=de_DE.UTF-8) I have opened regedit and selected the root key (named "My Computer" in english). After this I have closed regedit, changed LANG to C and opened regedit again. But instead of the root key being selected its first child key was selected.
I'm trying now to see what happens if I'm changing the language in Windows XP to english too. But changing the language there seems not to be easy (installing the "Windows XP Service Pack 3 MUI Pack Update" and setting anything to english seems to be not enough. Also on the official language pack site from Microsoft for Windows XP there is no english language pack listed).