Wrong value of entity in history graph

Hello,

I have the following issue with my current ha version 7.2 :

The live values of my entities are shown correctly in the lovelace dashboard. When I click on an entity a stable and wrong value is shown in the graph.

Can anybody help me with that topic?

Regards,
Stefan

https://community.home-assistant.io/t/getting-help-in-languages-other-than-english/618900