Thank you @awais.hafeez,
Now it is rendering Bangla properly except Microsoft Equation. If any equation contains Bangla Unicode text it still cannot render properly. Please try to fix that issue.
We tested the scenario and have managed to reproduce the same problem on our end. For the sake of correction, we have logged this problem in our issue tracking system. The ID of this issue is WORDSNET-20110. We will further look into the details of this problem and will keep you updated on the status of correction. We apologize for your inconvenience.