There's an interesting problem with the "Mark as Read" dropdown being colored grey, when it's actually still usable. It's not always a problem -- it seems like it gets triggered when I'm going through "everything" and try to mark a feed unread (doing this before I dive into reading will usually keep the text black.)

I can still click the greyed out text and it does the needful, it's just colored incorrectly and threw me for a loop.