When the page loads, all header parts are moving

Hi WordPress team,

Thanks a lot for this new theme. It took me a learning curve of two days for FSE, but I am already getting the hang of it and do not want to go back.

There’s one issue that’s apparent: When I load a page, it first tries to load the “slow internet version” in simple text html before it settles on the design. In this moment, all header parts are moving.

Before, with Twenty Twenty One, it was different. It took a moment before the page loaded, but all elements appeared right where they were supposed to be.

Do you have an idea how to fix that?

Thanks,
Nicole