I installed libreoffice and although it has a language support modul, it has nothing completely except English. What is the language module and setup language in the portholes, I tried my Serbian language to install is not supported. I do not understand the policy to create distribution with localization support in several languages. All other kde linux may have a complete localization.
You are right, we will correct the support of the Serbian language in the next update.
Thank you for setting in the next update Serbian localization in Calculate. I solve the problem with libreoffice by placing the gnome flag, this can because LibreOffice has their localization files
In today’s night assembly 20180228, everything should work. The update will come in the next few hours.