Can't Move/Copy Selection
When I use the selection tool, I create a box around what I want to move/copy, but using ctrl + drag or ctrl + alt + drag, copy paste, just dragging... nothing I do makes a difference. The outline of the box moves or is copied somewhere else, but the image/color from inside the box is not moved or copied. The box is blank inside. I thought it might be a problem with the layers, but I don't have multiple layers. There is also a bar at the top that says "commit" or "cancel," but neither of these buttons do anything when I click them (nor does the bar ever disappear.) I'm not sure what I'm doing wrong. Any advice would be appreciated.