I have set up a certain document to have an array of objects/documents, and those objects contain a "block" type.
If I try to edit those objects and open the fullscreen editor, it closes in the moment I click on the text area

I am using the movie example schema to demonstrate here. All I did is adding this field to the "movie" document:
{
name: "movies",
title: "Related movies",
type: "array",
of: [{ type: "movie" }]
},
Yeah, that's an irritating one! Fortunately, there's a fix for it just around the corner: https://github.com/sanity-io/sanity/pull/1060
Glad to know! I couldn't find that ticket, so I guess I will close this one because it is a duplicate.
Thank you!