@Julian Thanks for posting in our Q&A.
It seems a known issue. I have tested in my lab. It shows same as yours. Please understand that graph issue is more related to develop scope, Q&A has limited resources. So, it is suggested to create a premier support ticket to get more help. Here is the support link:
https://learn.microsoft.com/en-us/mem/get-support#premier-and-unified-support-options
Thanks for your understanding.
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