I've noticed this many times over the past few weeks... when I go to a blog, and go up to the toolbar, to click on the like button, it is not there. Sometimes, it's not at the bottom, near the comments either. Notifications also seem to be working strangely -- like I get notifications on my phone app, but not on my browser, and vise-versa. This happens on my iMac, and on my Windows based laptop. A blogger friend wrote a post about the same thing the other day, and I was relieved to know it wasn't just me.
I've taken a screen shot or two, just so I know that it's happening, and I'm not imagining things. It's very frustrating, but, it just seems like not everything works the way it should all the time...