Cropping a page to US Letter aspect ratio preset creates a cropping boundary that exceeds the width of the document
Last tested with version 42.5 (from Debian 12) with a Brother MFC-5840cn, but this happened in any previous version as well.
As we use the 8.5x11" ("US Letter") paper format here, I often use Simple Scan's built-in cropping preset for that size. However, as you can see with this short demonstration video, it results in the preview showing a cropping rectangle that extends to the right into the ruler's margin. It does not seem (at least from what I can tell) that the saved output gets affected (?), but at least the preview is wrong: