Comment # 24 on bug 939153 from Rolf Gloor

@Christian Lorch:
Updates usually work via a repository. So updated files and dependencies get
loaded/installed/updated. 
I personally don't like the idea of any additional/special scripts running
during update/upgrade.

New version of Thunderbird require new version of Lightning.

I don't know how they package those files in the repositories at (open)SUSE.
There is the basic Thunderbird package ("MozillaThunderbird", in English, I
presume)  and the corresponding translation files (common languages
translations in "MozillaThunderbird-translations-common" as well as extra
translations in "MozillaThunderbird-translations-other").

Since I didn't find any Lightning packages in the appropriate
installation/update repositories, I assume that Lightning - as a TB core
component - is now within the "MozillaThunderbird" package.
However, what I don't understand is WHY the translations for Lightning are not
in the corresponding translation files as well.
Either in the above mentioned translation files of Thunderbird, or if that is
not working,  within separate Lightning translation files (something like
"MozillaLightning-translation-commons" and
"MozillaLightning-translation-other").

That is an annoying bug and known for several / many years now.
Thanks in advance for fixing.