One or two weeks ago, I had reached 6100 posts, and counting, the last thing on my mind at the time was that a good portion of the 100 posts would vanish without a trace. After I logged back after that day, I realized that decreased significantly, I believe that before the disappearing posts, I had 6189-6199 posts, but now it decreased to 6050-6020 posts. Fast forward to today, I also noticed that the number of posts I made yesterday had too decreased, I remember that it was in the region of 6120-6140, now it's 6086.
What's happening here?