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    Bug 
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    Resolution: Done
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    P1: Critical 
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    5.9.3, 5.10.0
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    None
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        0d9208cecbbd9ed08e4ffb6540729668e3bd7754
The issue occurs when a simple stylesheet with background is set on QWidget. Checkmarks are only shown for the active item (not the other items - see screenshot and example)
This worked in 5.8.1 but not in 5.9.0