Context menu option for custom actions doesn't work

I made three UCAs to rotate images 90, -90 and 180 degrees. They are all in the same context menu called "rotate image". It's working absolutely fine in Thunar but not on desktop. If I right click on a .jpg image file the menu entry "rotate image" is visible but not the sub menu with the options to rotate the image by different degrees. Is this an issue of my system or can it be reproduced by others? I am using Thunar 4.18.0 and Xfdesktop 4.18.0.