Posts disappear and then reappearing?

A weird one, but still. I was searching for something else and an old thread from PH came up on google.

But I remembered replying to that thread. But the other replies on that thread disappeared, so it now looks like oldmanbm was talking to himself.

Snip below how the thread loaded.



https://www.pistonheads.com/gassing/topic.asp?h=0&...

It's just a bit weird.

Edit - I searched though my post history, found my replies while I was writing this post, and they then reappeared.