Palette: Clearing "show more elements" symbol does not update tickbox

MS 2.0.3 / Win 10

1. Make sure you have a user workspace in view, right-click on a palette and select "Insert New palette."
2. In the dialogue that pops up, tick "Show more elements." Exit dialogue.
3. Open the new palette, right click on the "show more elements" symbol and select "clear."
4. Return to the "palette properties" dialogue.

Actual result: The "show more elements" is still ticked.
Expected result: The "show more elements" is unticked.