When using the Inverse Rounded Corners in Corner Options, the corner shape doesn't match another box right next to it with the same settings when side by side. So when 2 boxes with the same corner options are next to each other it doesn't make a circle in the empty space but rather an angled rounded rectangle. It seems the top left and bottom right are one way and the top right and bottom left are another. It doesn't matter if the boxes are the same size or different. This issue was present in both InDesign 2020 and 2024 versions for testing. This was not an issue previously.