Created attachment 69935 [details]
the screenshot of amarok's bug
When I open amarok, it displays very strange like the screenshot in the attachment.
However, I clicked "view -> lock layout" in the menubar, amarok would be recovery.
No need to change the layout, just slightly moving any of the panes or changing the Window size should be enough.
*** This bug has been marked as a duplicate of bug 292895 ***