Sharp edges in what way? I've never been stabbed by it and the corners are all rounded. The long edge running across the bottom under the spacebar is the only

Sharp edges in what way? I've never been stabbed by it and the corners are all rounded. The long edge running across the bottom under the spacebar is the only thing that could maybe be described as sharp but it's nothing like the edge of a piece of wood or anything sharp. I wouldn't have even noticed it after years of usage without you mentioning it. I've also never once hit it with my hands. I also used the device on Debian without issues. It just worked out of the box. No idea about a Raspberry Pi but Google mentions others are using it without problems. Maybe you had an older model of this keyboard?