Clipping in Safari

I’ve encountered an odd behavior and have searched boards and don’t see it replicated. My “clip to DT” icon in Safari just disappeared from Safari, possibly because I updated my OS. I use it multiple times per day. So I reinstalled it, it’s there in the menu bar. But when I click on the icon nothing happens except when I am on a DT page, like this one. If within DT’s website, it will clip pages, but nowhere else.
How bizarre is that?

The website shouldn’t matter actually. Which version of DEVONthink and of Mac OS X do you use? Does a restart fix this?