I was doing a YouTube tutorial called Easy Soft Body Simulation and ran into an issue where the plane that I set up for the background is distorting in camera view.
It's a very simple set up with one plane for a wall and one for a floor. In the layout view, the wall is a solid 90 degree plane painted black, but when I put it in camera mode (using 50mm), the wall is shortened significantly and slanted back at an angle. To be clear, the wall is not slanted in any way other than in camera view.
Because of this, there is a small triangle that shows in the render, where the wall and floor meet. As soon as I move the camera even slightly, the issue vanishes, but reappears in camera mode.
Is this user error (me, the noob) or a bug of some kind?