Auxiliary properties not loaded correctly at project open

There seems to be some issue with initializing aux properties on project load. E.g. if project has this aux property defined in .qml:

/*##^##
Designer {
    D{i:9;cameraSpeed3d:57;cameraSpeed3dMultiplier:3}
}
##^##*/
  

It doesn't initialize these values to the View3D instance when project is loaded:

    ModelNode node = Utils3D::active3DSceneNode(this);
    // node internalId matches the value in above snipped
    auto speedProp = node.auxiliaryData(edit3dCameraSpeedDocProperty);
    auto multProp = node.auxiliaryData(edit3dCameraSpeedMultiplierDocProperty);
 
if (!speedProp || !multProp) {
    // this branch is executed, i.e. properties didn't have values
    ...
} 

To repro:

• Create 3D project and adjust the camera speed settings for the View3D (via 3d view toolbar)
• Save the project (make sure the aux property got saved as comment in .qml - you may have to make a regular change to the document to enforce this)
• Close QDS
• Reopen QDS and load the project
• Open camera speed settings dialog -> default values are shown.