query form is empty

When opening the SHMARQL tool from the link in the menu (SPARQL Endpoint ) on this page: https://nfdi.fiz-karlsruhe.de/matwerk/   The query form is empty!

After refresh, the form is present.  

<img width="1642" height="947" alt="Image" src="https://github.com/user-attachments/assets/30cb98e5-f8fe-4aab-bfcb-4d42a37fae06" />