This doesn't apply to Windows 10 edition, that one works fine, but there's a few issues with the new menus in Minecraft: Pocket edition, all 3 involving the world selection menu.

-When scrolling, it plays the clicking sound like if you actually selected a world.
-Sometimes, when scrolling, the bevel around the world icon will disappear and only the icon is there as well as the box with the name, date, etc etc. The 3D outlining around the world icon disappears.
-This may or may not go for a few other menus, but sometimes lines appear above the text in the menus, such as above the world names. It appears it mainly appears above Os.