Layers are all screwy

[mitchcurtis]

1. Copy an image from somewhere
2. Create a new layered image project with the dimensions of that image
3. Create a new layer and make it the active layer
4. Paste the image into that layer
5. Rename the layer to "tiles"
6. Rename the first layer to "bg"
7. Hide the "tiles" layer; the bg layer will be hidden instead
8. Unhide the "tiles" layer; the bg layer is still hidden