We were on four before.
I checked in briefly earlier this morning before logging in, because I had to go do some things first, and something weird happened with a page turn while I was reading on my phone. (This was an hour or two ago.) While reading, there was a page turn and it seemed like a post was missing, or that whoever was posting then had left out something. A few moments later things seemed to "shift" again, and I went back to the first page and quickly scrolled straight through. This time I found several posts I'd totally missed seeing earlier, and things then made sense. And now you're saying you observed something weird, too, so it wasn't just me.