Button can't be in checked state

import QtQuick 2.1
import QtQuick.Controls 1.0
import QtQuick.Layouts 1.0
...
ApplicationWindow {
    ...
    ExclusiveGroup {
        Action {
            id: action1
            text: "Action 1"
            checkable: true
            checked: true
            onToggled: console.log(checked)
        }
        Action {
            id: action2
            text: "Action 2"
            checkable: true
            onToggled: console.log(checked)
        }
    }

    toolBar: ToolBar {
        RowLayout {
            ToolButton { action: action1 }
            ToolButton { action: action2 }
        }
    }

    Row {
        spacing: 10
        Button {
            action: action1
        }
        Button {
            action: action2
        }
    }
}