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Bug
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    Resolution: Done
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P1: Critical
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    5.15.0 RC2, 5.15.0
 
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        b4d36a05be9f34976c1a1b5ea60ce03c4ab59a25 (qt/qtdeclarative/dev) ec1fc3aaa78c2c6a8ed660f26bc2c26b7d0c10bb (qt/qtdeclarative/5.15)
 
My test code:
import QtQuick 2.15
import QtQuick.Window 2.15
Window {
    width: 200
    height: 100
    visible: true
    title: "Inline component test"
    component TestComponent : Item {
        property alias text: innerText.text
        width: innerText.implicitWidth
        height: innerText.implicitHeight
        Text {
            id: innerText
        }
    }
    TestComponent {
        text: "Something"
    }
}
Compiling and running with Qt 5.15 RC2 produces error in runtime:
qrc:/main.qml:25:9: Cannot assign to non-existent property "text"
That's on attempt to set `text` in `TestComponent` instantiation. Removing the usage of `text` property, leaving only `width` and `height` bindings to `innerText`, leads to another errors:
qrc:/main.qml:15: ReferenceError: innerText is not defined qrc:/main.qml:14: ReferenceError: innerText is not defined