Anyone else having trouble wit hte banner editor [​www.planetminecraft.com/banner/] ?

Neither the mini patterns under the add pattern button, nor the added pattern to the work-in-progress [​WIP] display at the left show anything but the solid base color selected…

It is possible to change the base color and layers appear to be inserted correctly (but without the changing the WIP display ).
Also the export JSON button appears to generate the correct code, but the export image and post banner buttons do not appear to function.