Adobe Support says that AE does not support full Unicode glyph substitution or things like multi-glyph characters and that one will have to import texts as images. I was able to create an AE template that supports texts in Hindi, Bengali, Tamil, Tuelug, and all that kind of languages that Adobe says that AE doesn't support. I believe that such a template will represent a huge help to the overwhelming number of people and countries that use these languages and can't insert texts into AE.
Here is a video. Please compare the texts and see how the text don't show the right way in the normal comp and that they show correctly in the template. I tried to contact adobe but no one responds (bug/features).