Created attachment 106671 [details] knotification with 1px width The bug [ https://bugs.kde.org/show_bug.cgi?id=381130 ] is solved but insted of having notifications on top left, they appear (sometimes) just like a vertical line with 1px width.
Created attachment 106672 [details] knotification with 1px width
*** This bug has been marked as a duplicate of bug 382340 ***