Update, September 27th 2018: Selecting layers while in Map Editor mode will no longer open the layer in question in Layer editor mode, keeping you on the same page. We've also added dropdown icons so you can more clearly see when a folder of layers is open or closed.

Update, October 22nd, 2018: When editing a map, one now has the ability to zoom in and out and utilize the tilt button located at the top right by the "View" button.