I'm also on Chrome. The first time I looked at your "wheel bearing" thread the older pics did not show. But later when I looked again I saw them. Not sure if you did something to correct the issue or if was just some sort of glitch?
As you say, PostImage is going the way of PB. Frankly I'm done with photo hosting sites. Now I keep all of my pics on my hard drive and not online (I've never been a big fan of any "cloud" based systems). I realize you are a photography buff, so this may not work for you. Although you could keep them on a separate portable hard drive. The SSD drives are very compact, fast, easy to use, and now you can get HUGE storage space for very little money. Then you can choose your preferred image management software as well. Might be worth consideration.
Especially since Xweb allows us to directly post images from any source, a hosting site isn't needed. Another (non-Fiat) forum I frequent still won't allow me to do that, but I also could no longer post images from any of the hosting sites I've used, so no real loss there.
I asked the question here previously if anyone knew of a hosting site that was free, simple to use, and might allow me to post images on that other forum. The intent was that I'd only use it to post an image on that forum by copying the image from my hard drive first. That way all of my pics would still be retained on my computer and I could post the occasional image there. But no one seemed to know of any such hosting site. So I just accepted that I won't be posting any pics on the other forum. Gotta love technology and commercial greed.