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  1. Qt
  2. QTBUG-39725

Events for mouse moves arrive delayed in a Widget derived from QGLWidget on Linux desktop

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      I created a simple test case: a glwidget tracks the mouse movements and paints a rectangle below the cursor. The rectangles movement lags behind the cursor's by a large margin. In the supplied test case you have to press a mouse button for the widget to track it.
      I discovered the issue in an application that worked fine in previous versions of Qt.

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              paeglis Gatis Paeglis
              _rand0m Sebastian Bickerle
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