Details
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Bug
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Resolution: Incomplete
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P2: Important
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None
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4.8.4
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OS X
Description
Please see the attached qdockwidgettest_v2.zip test program. The QDockWidget contains QGraphicsView items.
To reproduce this case, drag the red line towards left or right to see the issue. Compare the paint refresh rate for both dock and undocked cases.
When the dock widget is docked, the paint refresh rate is slower. If the dock widget is floating (or undocked), it has better paint refresh rate.
Plain QWidget (which has QGraphicsView item) does not reproduce this problem.