I have a small problem. Some special characters (from non-Latin languages) are stored as question mark in the system. An example is ồ (copied from Hồ Chí Minh) is stored as "?" in our database.
Is installing language packs the only and direct solution to this? If it is, when multiple language packs are installed, do users need to switch client language from A to B in order to see a special character in B language? Or does system create a pool of all available languages and support them on one session?