QML Menu and EGLFS causes SIGABRT error

[PhTe]

I'm working on an ARM device running QT 5.4.1 with EGLFS (without x-server).
I have created a simple fullscreen application with QML and want to show a popup context menu if the user clicks on the screen.

So i created a Menu, ...

Menu {
    id: popupMenu

    MenuItem {
        text: qsTr("Change")
        shortcut: "Ctrl+C"
        onTriggered: {
            console.log("Change")
        }
    }
    MenuItem {
        text: qsTr("Default")
        shortcut: "Ctrl+D"
        onTriggered: {
            console.log("Default")
        }
    }
}

...and a MouseArea with an onClicked handler

onClicked: {
    console.log("clicked");
    popupMenu.popup();
}

If i now click with the mouse, the "clicked" text is printed to the console and then my application stops with an SIGABRT error and the message "EGLFS: OpenGL windows cannot be mixed with others."

Why? How can i fix this? I mean it's just a simple stupid popup...