Pixlr - Transparent image with Text layer on top . Layer must be rasterized?

This is a noob question for sure, but I can't seem to find the answer. Using Pixlr Online in chrome I create a new transparent image and want to lay some text on top but keep getting the error that the Layer must be rasterized. So I select the layer and Rasterize it, but still can't seem to add text. see this screencast.

10 second Screen cast