I created a specific theme for an application window with a json theme-w_foupagecpt.json file. The specific images for the datawindow control (w_foupagecpt$datawindow) in this file are ignored (checkbox, dropdownlistbox, radiobutton), the colors are well applied. These are the images of the overall theme that appears.
For the other controls present in the file (window, dropdownlistbox), the properties are displayed correctly (see attached file).

If I remove the prefix w_foupagecpt in the different sections and use it as a global theme, it works correctly.

I checked several times the syntax of the file without seeing any error and the actual presence of the images. The json file is valid (verification performed by a validator).

Thanks for your help