Issue 2526410 (https://sourceforge.net/tracker/index.php?func=detail&aid=2526410&group_id=219240&atid=1045429) collects all graphics related problems as the cause might be related.
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Issue 2526410 (https://sourceforge.net/tracker/index.php?func=detail&aid=2526410&group_id=219240&atid=1045429) collects all graphics related problems as the cause might be related.
The problems described in Issue 2526410 don't seem to be related as thought before. Therefore closing Issue 2526410 and re-opening this bug.