If user right-clicks on a key and then clicks "Refresh key from server" then key will be displayed twice in the list after updating it from server. Refreshing the list removes the duplicate.
I see this, too. Weird.
Git commit 2fe1b683cec044f96cf973ea2feace70aeb7e6f5 by Rolf Eike Beer.
Committed on 29/04/2012 at 23:52.
Pushed by dakon into branch 'KDE/4.8'.
prevent that a key shows up twice after reloading it from keyserver
M +14 -0 core/KGpgKeyNode.cpp
M +8 -0 core/KGpgKeyNode.h
M +1 -1 core/KGpgRootNode.cpp
M +13 -4 model/kgpgitemmodel.cpp
*** Bug 306533 has been marked as a duplicate of this bug. ***