Hello Gilles,
Thank you for your answer! It helps me to understand the behavior of the Mbed Tls library.
Since I am just evaluating and doing some Demos, we do not need to overdo this here. But what would be your suggestion for a workaround for now?
I think I just follow the section in the documentation "How to test without entropy sources" and leave some comments in the Demo code.
Regards Heico