Connections::enabled is not properly revisioned

Since 5.7, "enabled" in the following example has been resolved differently than in previous versions:

import QtQuick 2.0

Item {
    id: root
    width: 1280
    height: 768
    enabled: false

    Connections {
        target: timer
        onTriggered: console.log(enabled, root.enabled)
    }

    Timer {
        id: timer
        interval: 1
        running: true
    }
}

even though the import statement wasn't changed. The behavior should have continued as previously, unless the import statement was updated.

Given the number of versions that have been released with this, it isn't clear whether it is better to try to properly revision, or leave behavior as-is.