Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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5.10.0
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None
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macOS 10.13.3
Description
While dragging a QSlider inside QWidgetAction in QSystemTrayIcon menu, it displays a trailing image of the slider dot.
The effect disappears as soon as I release the mouse button, but the ghost trail gets accumulated since the widget display moment.
The trail disappears when I change the background to opaque for a moment, repaint, than back to transparent, but it creates an ugly flicker.