I work with balgamov and I did correct some of the issues but initially he changed Turkish letters like ğşı with gsi which I recommend he not do in the future because that's not how you resolve the situation.
Most likely Turkish players have similar issues where it is the Addon and not the main interface itself.
As for your issues where you have missing text without addons, please do the following.
Disable your addons that way so you don't need to remember which addons you had active. Then get screenshots of the issues you reported like holding shift and sending a name to chat with exact steps. As well as the mail with missing text from artisans and trade. Lastly how you reproduce guild and houses that blocks the text, with exact steps.
ZoSDanBatson is very collaborative and Russian is an official language so that can be addressed if it can be reproduced.
As far as all mods working correctly that's up to the authors to correct.