Because of the way the resizing layering works, I use the CSS trick of creating a relatively positioned container and positioning the elements within it at (0, 0). Giving resizable an upper-left boundary of (0, 0) causes it to ignore the upper-left boundary. Expected behavior would be to respect the boundary.

My current workaround is to position everything within the relatively positioned container at (1, 1) so I can make the upper-left boundary (1, 1) and still have the whole image area available for cropping.