Thank you for reaching out to Community!
Usually, an unsaved comment shows when clicking on the comment box. It doesn't show a message that there is an unsaved comment, but when clicking to add a comment, it will show the comment that wasn't saved.
If you have any other questions regarding this matter, please let us know.
I spent a lot of time trying to restore my comment. Eventually I was able to find this site but I searched many combinations of 'unsaved comment' in the help section of Jira because I thought it was user error on my part.
At least update your help page to explain that this is bug if it has been a known issue for two years.
Welcome to Atlassian Community!
Thank you for sharing the screenshot.
The issue that you are facing is related to a known bug. For more details, please check the ticket below:
Please, click on “This affects my team” and also watch to receive updates about the bug fix.
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