I think the worst example of this overzealous localization was when some person translated the VB(A) reserved keywords to the appropriate language (I want to say it was german or swedish). Happened in the 1990s.
Your programming language reserved keywords changing depending on your selected language was a big facepalm.
Searching for this problem on the web doesn't produce any valid relevant results, so the web has forgotten or maybe the horror has been plastered over.