NEXT / PREV BUTTONS
When scrolling down that first part of the page, i.e. 1 scrolling action or 1 jump, I see the < and > arrows duplicate from 2 to 3 or even 4. So two above (left and right) and two below (left and right)... The top ones are located to the left and right of the TITLE (e.g. GRID 300). And the 2nd set of arrows will *sometimes* appear at the top left corner of the 1st image, and the top right corner of the 5th Image (or however many are in each row). The last image in first row, to the top right of that image.
You may want to experiment with Chrome and see if there is a bug or issue that was missed. The 2nd arrow flickers. Comes and goes. In this scenario, it was only on the RIGHT hand side, and not the left, as per the Grid300 Gallery above in my previous post.