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  1. Qt
  2. QTBUG-124270

StackLayout doesn't handle Repeaters with async loading

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.5.5
    • Quick: Layouts
    • None

    Description

      Asyncronous loading can cause QML components to complete in different orders, by design. The StackLayout seems to be dependent on this initialization order which can cause the wrong item to be shown.

      Reproducible example:

      import QtQuick
      import QtQuick.Window
      import QtQuick.Layouts
      
      Window {
          width: 640
          height: 480
          visible: true
          title: qsTr("Hello World")
      
          Loader {
              asynchronous: true
              sourceComponent: StackLayout {
                  id: sl
                  currentIndex: 0
                  anchors.fill: parent
      
                  Repeater {
                      model: 10
                      Text {
                          text: `${index}: ${StackLayout.index} - ${sl.currentIndex}`
                          color: "black"
      
                          Component.onCompleted: console.log("created", index)
                      }
                  }
              }
          }
      }
      

      Causes:

      When setting asynchronous: false you get the expected behavior:

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          Joshua Huels
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          Joshua Huels
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            qt.team.quick.subscriptions Qt Quick and Widgets Team
            jhuels20 Joshua Huels
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            Dates

              Created:
              Updated:

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