Characters "і", "ї" and "є" (and maybe "ґ", but I'm not sure whether translation uses it) are visible in menu buttons (first screenshot) and some headers but are missing from the equipment description, crew details, etc (if it must be solved at per-case basis then I can extend this list).
For example - text for MPD5035 (second screenshot) currently shows as "Заснован на популярнй сер маневрових двигунв..." instead of "Засновані на популярній серії маневрових двигунів...".
And in crew tab (third screenshot - actually this is a mixed case because headers are fine here) rows should be named "м'я"->"Ім'я", "Професя"->"Професія", "Освта"->"Освіта", etc.
I'm not sure whether this problem is caused by translation files/text display UI or something is wrong with my system/fonts, so confirmation from another player would be helpful.