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    Bug 
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    Resolution: Done
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    P2: Important 
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    None
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    5.7.0
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    None
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    OS: Manjaro Linux
 Kernel: 4.8.5
 Desktop: KDE Plasma 5.8.2
 Graphics: Intel HD3000
 Display Server: X.Org 1.18.4 driver: intel Resolution: 2560x1440@59.95hz
 GLX Renderer: Mesa DRI Intel Sandybridge Mobile GLX Version: 3.0 Mesa 13.0.0-rc2 Direct Rendering: Yes
 Init: SysVinit rc: OpenRC
Moved here from KDE bugs: https://bugs.kde.org/show_bug.cgi?id=372189
A lot of applications and icons do not scale very well at non integer scalings; I tried '1.5' . KMail is especislly badly affected, where the message window does not scale at all, and becomes un-usable.
Also, even at a scaling of '2', some settings dialogs and kmail duplicate sub-windows.