Hi Bettina,
thanks but it seems not to be possible, what I need. I’ve created a “Text with title” element on my homepage. I’ve saved it as an element.
I’ve added the element to a different page, e.g. the search results template.

Now, I’ve changed the content in my “Text with title” element. I can’t save it as element with the same name, so I’ve deleted the element and saved it again.
I would expect, that the different page (search results template) would update the content automatically, since I’ve updated the shortcode. But this doesn’t seem to be the case? I would need to delete the element and add it again?