Someone responded to a comment I made here but before I managed to click on it the question was deleted. I am able to read the response by clicking on the red envelope icon in the top bar, but the problem is the red envelope does not go away.
When I click on the response, I get the message Sorry, this content is no longer available and the response remains marked as unread.
This appears to be a bug in the software running this web forum. How can we fix this, and is there a workaround to mark a response as read?