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  1. Qt
  2. QTBUG-96465

Text's underline thickness is unstable on fractional screen's scale factors

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      Text's underline thickness is unstable on fractional screen's scale factors.
      Reproduced at least on 125% screen's scale factor.

      import QtQuick 2
      import QtQuick.Window 2
      
      Window {
          width: 640
          height: 480
          visible: true
      
          ListView {
              anchors.fill: parent
              model: 100
              delegate: Text {
                  text: "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s..."
                  font.pixelSize: 16 // not reproduced on 12, 15, 18, 21, etc
                  font.underline: true
                  renderType: Text.NativeRendering // reproduced on Text.QtRendering as well
              }
          }
      }
      

      Pay attention that to reproduce this on Qt 5 you need call

      QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
      QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
      

      before creation of the application object

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            esabraha Eskil Abrahamsen Blomfeldt
            studiosus Vladimir Belyavsky
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              Created:
              Updated:
              Resolved:

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