https://bugs.kde.org/show_bug.cgi?id=360889

            Bug ID: 360889
           Summary: Graphic artifacts on the panel's pop-ups
           Product: plasmashell
           Version: 5.5.95
          Platform: Fedora RPMs
               URL: http://rezza.hofyland.cz/kde/plasma-artifacts.png
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Panel
          Assignee: plasma-b...@kde.org
          Reporter: jrez...@redhat.com

When moving cursor over panel on the components that contains pop-up, graphic
artifacts appears - see screenshot in the URL field. It's not very visible when
movement is slow but faster breaks screen a lot. Even on other non-primary
displays. When moving faster, pop-ups are even shown on different displays and
animated. It happens on task manager, systray etc. Seems like the first release
I realized this is 5.5.95.

It doesn't matter what compositor method is selected - OpenGL (GLX, EGL),
XRender.

Reproducible: Always

Steps to Reproduce:
1. select some component/widget on the panel that shows pop-up (task, systray
icon etc)
2. wait for pop-up to appear
3. move quickly over other components that has pop-up (but the same type)

Actual Results:  
Graphic artifacts, even on other displays (not only primary)

Expected Results:  
No graphic artifacts

cat /etc/fedora-release 
Fedora release 23 (Twenty Three)

rpm -q plasma-desktop
plasma-desktop-5.5.95-1.fc23.x86_64

rpm -q qt5-qtbase
qt5-qtbase-5.6.0-7.fc23.x86_64
(same result on qt 5.5 though)

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 09)

rpm -q xorg-x11-drv-intel
xorg-x11-drv-intel-2.99.917-19.20151206.fc23.x86_64

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