Below are the issue if the username is too long AND role is 'Community TA':
1) On responses screen 'Community TA' gets cutt off from the author label.
2) On comments screen 'Community TA' at the top right of response merges with the discussion icon which appears with # of comments.
1) Login to edX app with a long user name which has 'Community TA' role.
2) Navigate to discussions.
3) Navigate to comment screen.
4) Add some comments and view.