Issue Summary

In the Theme's Details panel, program can be selected via a program selector window.

This window display a list of items, but at the bottom of this list, there is undetectable programs, as they are listed after the end of the selector's frame

Steps to Reproduce

1. Open a Theme
2. Select the program field to open the program selector
3. Scroll to the very bottom of the list (this may activate multiple lazy loading before reaching the end)
   Note : The issue should also appear before the lazy loading is triggered
4. Notice that the scroll bar goes beyond the frame's lower boundary
5. In devtools, inspect the listed programs and notice there are entries at the end of the list that are highlighted below the selector, but are not showing.

Expected Results

All programs in the selector should be displayed and selectable

Actual Results

When reaching the end of the list,  there would be around 3 items consistently hidden, as they display after the end of the frame

Workaround

If a user know the name of the programs, they would be able to search the name and filter the program selector's entries