I think I found a bug.
In Edge and FireFox, tested in both the default style and my customized default style, it works with no problems. I can scroll and it will keep refreshing to show my photos until it shows all of them.
In Chrome, in the default style and my customized default style, it will refresh once, sometimes twice, as I am scrolling but will stop and not allow me to keep scrolling to see the rest of my photos.
I have around 140 photos.