- Find a post with no comments
- Add a comment
- Delete the comment
Now unable to add a comment as the "Add comment" link disappears at the same time as the comment. Refreshing the page restores the link.
I'm using Firefox 68.0.2 on Android 9 (OxygenOS 9.0.7).
This was noticed on an answer on code-golf.SE meta. I've also tested this on this MSO question and the same thing happens, so I'm guessing this affects both questions and answers on all SE sites and meta sites.