I just upgraded my 12.2 to KDE 4.10.1

I see the following issue:

I inserted an SD card into internal Card reader,
Device Notifier opened as expected, offered three actions, I chose download with Digikam
Digikam opened and download worked as expected.
I closed the Digikam Import window, Digikam main window still open
I selected the Device Notifier icon, it pops up as expected
As soon as I move the mouse pointer off the system tray, moving toward the Unmount icon, the pop-up closes.

I am able to unmount the SD card from within Dolphin.

Can someone confirm this behavior before I enter a bug?