Black borders appear in fullscreen Edge at default resolution

I’m using a 14-inch M3 Pro MacBook Pro with Microsoft Edge. When I go fullscreen in Edge at the default scaled resolution of 1512 x 982, black borders appear on the left and right sides of the screen. My cursor cannot move past these borders essentially the black bars on the screen grow. This only happens at the default resolution, if I switch to a different scaled resolution, the borders disappear. The issue does not occur in Microsoft Edge Dev.

Steps to reproduce:

On a 14-inch M3 Pro MacBook Pro, set display resolution to the default 1512 x 982.

Open Microsoft Edge.

Enter fullscreen mode.

Expected behavior: The fullscreen window should fill the display edge-to-edge and allow the cursor to move to the edges, as it does in Edge Dev and at other scaled resolutions.