After some testing I found out a workaround.
I had QT Graphics System Raster enabled.
When I swicth back to Default (X11/XRender), it started working again.
So there are two basic solutions:
1. uninstall openoffice.org-kde and use QT Graphics System Raster
or
2. use default QT Graphics System
It would be great to use both openoffice.org-kde and QT Graphics System Raster
After some testing I found out a workaround.
I had QT Graphics System Raster enabled.
When I swicth back to Default (X11/XRender), it started working again.
So there are two basic solutions:
1. uninstall openoffice.org-kde and use QT Graphics System Raster
or
2. use default QT Graphics System
It would be great to use both openoffice.org-kde and QT Graphics System Raster