(I didn't put an [864] before it, as it doesn't seem like it'd necessarily be version dependent.)
ZCL acts independently from ZQuest's Options area when choosing to operate in small mode or large mode. They're not linked. Check a box in ZCL, and ZQuest's Options area remains unchecked, and you arrive in Large mode anyway. Check the box for "use Small Mode" and nothing happens. The change takes place in ZQuest the next time you start it up despite that ZCL's checkbox is still checked.
A minor issue, obviously, but will cause a tad bit of confusion.