- 
    Bug 
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    Resolution: Duplicate
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    P2: Important 
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    None
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    5.15.1
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    None
The Qt wayland window decoration (like used by qtcreator) https://www.qt.io/blog/2018/12/14/whats-new-wayland-platform-plugin-qt-5-12
don't maximize on KDE/GNOME/wlroots on double click.
- duplicates
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                    QTBUG-68578 Double Click on Wayland title bar to maximise / restore window -         
- Reported
 
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