I know how to draw a circle in GIMP, anon!

There are so many weird things about GIMP, and it feels like they add more over time. I've moved a layer and then tried to draw on it and had nothing happen. Why? Because the layer was created as an array of pixels the size of the image, and when I move it there's now a dead zone where there's no pixels in the visible image. It turns out there's a special command to expand moved layers to fill the image: https://docs.gimp.org/3.0/en/gimp-layer-resize-to-image.html

There are times using it that it feels like a maze to navigate to just get my changes reflected in the document.