Presence "Leave Empty" Option Does Nothing

Hello, when trying to organize busy lamps on our desk phones (VVX450). We would like to leave some empty spaces. For example, we want the busy lamps to appear only on the expansion module and not on the display within the 12 buttons. When I click save, 2 options appear to either leave the empty spaces, or collapse the list. I select Leave Empty, but the list collapses anyway. Can you either fix this or remove the unnecessary step to click either option. It appears to be a flaw in the programming.