[otrs] New Ticket create not working table format

Hi , Customer view or agent view create and update ticket text area option table and number list showing fine. But after sending or submit ticket it showing only plain text and number list displaying "-". How to change plan text to rich text. I am trying changes 1. PostmasterAutoHTML2Text --no 2. Frontend::RichText --- yes But not working anyone help me. Regards, Kalyana chakravarthy M .P, Sr software Engineer.