Only see my instructable updates when logged in... Answered

I published my instructable, then went back to update a few things, and when I went to post it to facebook, I noticed it was using the wrong picture...so I tried logging out of instructables, and looking at my instructable, but it was an earlier version, not the updated one.

When I look at it while I'm logged in, the updates are all there.

What's going on here? Is this intended?