The number of layers in the Map Layer has grown since v.9.3. At least, I think it changed after v9.3 because I only just now noticed two new map layers at the bottom of the list: Traffic and Realview Images. And too, the addition of Winds Aloft higher in the list pushed some things down. (As a separate discussion for later, is there an optimum listing of these layers here? Or should they be alphabetical?)
Anyway, I almost didn't notice the new Traffic and Realview layers. But since I'm supposed to be beta testing, I tap and pull on screen elements in the betas. That's how I serendipitously discovered the new Map layers.
But shouldn't there be some kind of visual indicator to users that "there's more"? I don't think a full blown scroll bar is needed. But perhaps an up and down arrow (as below), either which disappear when you're at the end of the list, would be easy to implement?