I changed the Gallery on my WordPress page from "default" to "tiled" and then viewed my updated page to see that new gallery layout starts to appear but as soon as the page fully loads the gallery vanishes entirely. Click HERE.
Reloading the page causes the same scenario. I've tried all other Gallery Types other than "default" (square tiles, circle, etc) and they all act up the same way, but the "default" setting still works fine. I also tried setting the Columns number differently (currently set at 5) but doesn't make a difference.