Hello!

When most of the items in the system tray are inactive (shown only in 'Status & Notifications) there comes a moment when 'Status & Notifications' panel does not show all the items, especially when there are more things that have tray icons loaded simultaneously. I think in this cases the 'Status & Notifications' should have a scroll bar and should be scrollable like the Kickoff launcher.
On the first screenshot applied the example is with the 'software updates' notifier icon which is almost fully visible but when just one more program is launched (in the second screenshot - ktorrent, which icon takes a place in the panel) - the software updates notifier icon just seems that is not shown at all.

Reproducible: Always