User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0
Steps to reproduce:
- Ensure Firefox is configured to restore tabs from the previous session.
- Open an existing issue on Gitlab or Github in a new tab. (Other web sites might be suffering from similar issues, these are the two where I frequently come across this behavior.)
- Write a comment on the issue and submit.
- Ensure your comment has been added to the issue.
- Close Firefox.
- Restart Firefox.
- Examine the tab.
Optionally, after 3, switch to a different tab, and after 5, switch back to it (not sure if this is necessary).
My comment appears in the web form but not in the comment history of the issue itself. (Or it appears in both.)
Tab is restored as it was last viewed: comment appears in history, web form is blank.