This has been an issue for quite a while
Tapping on the clock icon to load a previous version, select 'On Screen Preset' will show the on screen preset in the editor preview, but it will still only list the two items from the default preset
The only way to show the correct items is to return to homescreen, swipe KLWP from recents and then open the editor again (Sometimes that doesn't even work or it takes several attempts)
OR
Export the preset and then load it again (Or just load it if you're sure the export you have of it already is the most up to date one)