Expander arrow should hide when all icons are visible and no icon is hidden. When dialog with hidden items is hidden ListView does not update its count property - property is update on redraw. As a result expander arrow is still visible/hidden until user clicks on any plasmoid to show dialog.
- select/deselect "Show all items" in settings, save, expander arrow should hide/show imidiatelly
- select almost all items to "Always shown", leave "Keyboard indicator" as "Shown when relevant". Press Casp Lock, expander arrow should hide/show correctly