New undocumented and invisible feature of forum

If you add a comment to a thread and your comment contains a hyperlink ( ie a “http://” address ) then the comment is not added to the thread and there is no on screen indication WTF is going on

However 🙂

If you look at your email you will see a message that the comment is “in the approval queue” due to other people spamming

So in case you have tried repeatedly to reply to a topic and got nowhere, look at your email. That’s what’s happening