When using a mobile browser to view photos in a shared album on Lightroom Web (not in slideshow mode but single photo mode after selecting a photo), there are two bars - one on the right and one on the bottom. The bar on the right has the "x", download button, etc. and the bottom bar has comment button, like button, etc. When tapping the photo once, the bottom bar disappears but the bar on the right remains. I think the right bar should be hidden as well as per regular mobile site functionality as the intent of the single tap is to view the picture full screen.