Adding a comment containing the single quote (') character from the "Add Flag and comment" feature on a board shows ASCII character code "'" in the new issue view

Issue Summary

Adding a comment containing the single quote (') character from the "Add Flag" option on a board shows ASCII character code "'" in the new issue view comments. While the text is shown correctly in the old issue view.

Steps to Reproduce

1. Go to any board > Right-click on a card > Add flag
2. Add a comment with single quotes (e.g. I'm)
   
3. Go to new issue view to check the comment containing the equivalent ASCII code
   
4. Also, the ASCII character would be posted on the Slack channel if there is any A4J rule to send the "Slack Message" once the issue is "flagged".
   

Expected Results

Adding a comment with single quotes (e.g. I'm) should not the equivalent ASCII code.

Actual Results

Adding a comment with single quotes (e.g. I'm) contains the equivalent ASCII code.

Workaround

Remove or add the flag without a comment and add the notes afterwards as a normal comment.