Richtext editor problem in Umbraco 15

In the backoffice Richtext editors shows as a link only. If I click on the link it opens the editor. Normally in earlier versions it was possible to see the content here as well.

Am I missing something?

I am using it in Block grid.

Thanks.


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/115289-richtext-editor-problem-in-umbraco-15