Classified adverts only show first few photos...

[PunterCam]

I've had this problem across multiple computers (mac and pc) using google chrome for years! If i click on a photo to make it bigger, then click between photos, any photos after photo "8" or so don't appear - just a black screen. It works fine on m/s edge, and I dare say on firefox, but I use neither!

Be a nice one to sort...