Spell Checker should remember which language a word was typed in

[RHJihan]

Happens in OpenBoard

The bug If I type in two languages one after another the spell checker flags the word from the other language wrong. For example: Apple is a correct word in English, কথা is correct word in Bengali. If I type Apple first and then type কথা after changing the language, it flags Apple as a wrong spelling. I guess it uses the dictionary from the current language only for spell-checking.

To Reproduce Steps to reproduce the behavior:

1. Set English and Spanish/Bengali (Bangladesh).
2. Type Apple in the English input method.
3. Then type idioma in the Spanish input method or কথা in the Bengali input method.
4. Now it flags Apple as a wrongly spelled word.

Screen record

https://github.com/Helium314/openboard/assets/31377578/de9b4084-f291-4ca3-9f04-65955f62027d