I just upgraded Ubuntu to 18.04, I noticed that the language support does not work well in Kstars. Unlike version 16.04, switch application language only offers one language (us english). However, language-pack-kde-fr is installed, but French does not appear in the list. On the other hand, some translations appear here and there in the application,but relatively much less than before.
Version Ubuntu 18.04.1 64 bits. Kstars 2.9.8, Build: 2018-08-18T06:12:27Z
Subsidiary question: how can we contribute to the linguistic support of Kstars/Ekos?