My system tray used to have two rows of small icons.  Now it has one row: items that hide themselves into the tray are small and not resizeable (Thunderbird, Qalculate, Knemo); native widgets are large and resizeable (Klipper, Kmix, Device Notifier, Network Management).  The Pager and Task Manager both have two rows.

How can I force the tray to have two rows?  Is this possible?

System is Fedora-20 with all upgrades running KDE-4.12.2 .

Thanks - jon