Bookmark not toggling

I completed the discobot tutorial when I first signed up. In my profile I see the bookmark created as part of that tutorial.

However, I now do not appear to be able to add new book marks, nor could I even toggle that bookmark off - I had to go into profile > bookmarks > delete.
Using the f key also did not work.

I can toggle likes.
I can copy links.
Obviously I haven't tried the flag link on anyone's post.

Anyway, I'd mainly like to be able to click on the bookmark icon/link.

Anyone have any idea about what may have gone wrong.

This forum runs hosted Discourse, you could try looking at the Discourse Discourse.

Bookmark does a pop up window on my browser, maybe you have pop-ups turned off on your browser?