I am using Avro Keybord Typing 3.00 . in phonetic mode(english to bengali), character based typing. If you write 'aj(space)jOsna(space or not)' the word jOsna is miscoverted to some meaningless word as soon as u type the last 'a' of the word 'jOsna'. Think it is bug....although the word 'জোস্না' can be written trying some other tricks...

This is not a bug. Avro Phonetic is bringing up the correct spelling from Autocorrect dictionary.

Delete that entry, and it will work...