Shorthand Component binding does not work inside inline components

import QtQuick 2.15

QtObject {
    property QtObject explicit: Loader {
        sourceComponent: Component {
            QtObject {}
        }
    }
    property QtObject shortcut: Loader {
        // Shorthand syntax works fine, as usual.
        sourceComponent: QtObject {}
    }
    component Inline : Loader {
        // Comment out next line to avoid QML engine error
        sourceComponent: QtObject {}
    }
}

main.qml:15:26: Cannot assign object of type "QtObject" to property of type "QQmlComponent*" as the former is neither the same as the latter nor a sub-class of it.

import QtQuick 2.15
import QtQuick.Templates 2.15 as T

Item {
    component ABC :
    T.PageIndicator {
        id: control

        delegate: Item {}
    }
    ABC {}
}