Comment # 30 on bug 952855 from Dominique Leuenberger

I could reproduce by installing translation-update-fr !

That thing is totally outdated, but overwrites the original translations.

Erwan, as a quick fix/workaround: you can "zypper rm translation-update-*" -
this should solve the problem at your end.

And this bug now goes straight to sbrabec - translation-update in Leap is
messing up badly

Clearing needinfos... all errors are known by now and the offender identified.