I did do a search on this before I posted. If for some reason I missed it (and it is possible) and this has already been reported, my apologies.
Whenever I am in My Bookmarks, the page will accept what I type, but then when it refreshes to the My Bookmarks screen again, there are no bookmarks. I have asked one other member about this and they have confirmed that they are unable to add new bookmarks as well.
Not sure how widespread the problem is, but at least for two people, it seems to be an issue.