PDF Export Panel Application - doesn´t Export Diagrams

Hi together,
I encountered another Problem with the "PDF Export Panel Application" Extension (V1.1) in combination with the "Diagram Extension" (1.2):

Diagrams are not displayed in Exportfile, only the Sourcecode.

Steps to reproduce:

1. Install the PDF Export Panel Application
2. Install the Diagram Extension
3. Go to Administration -> Panel Wizard
4. Drag and drop the PDF Export panel to the side
5. Click "Save the new layout"
6. Create a page, or go to a exisiting
7. Go to the Edit mode
8. Add the diagram Extension as a macro and save the page
9. Create a Diagram and save it
10. Now try to Export it, with the PDF Export Panel Application

-> Result: The Exportfile does not include the picture only the Sourcecode of the Diagram is printed to the pdf File..

Thanks advance!