New widgets don’t show the title

If you’re using the new block editing interface for managing widgets you simply make a title for each widget using the Header block.

How do you mean? When I use separate titles, they will show up in another window. It looks like this so far. There is no option to add or edit the title.

https://ibb.co/zNdsCXg (widget without title)
https://ibb.co/xmCbLv1 (widget with title)