Dragging a block object into CKEditor 5 from outside the editor shows an inline caret and splits the paragraph. Here is the root cause (a private _blockMode flag), a working workaround, a live StackBlitz demo, and the fix I proposed upstream in issue #20247.
I needed to see the simple spaces in CKEditor 5, and the only thing out there was a 2019 proof of concept. So I packaged ckeditor5-simple-space: a tiny, dependency-free plugin that shows simple spaces with a toggle button — without ever touching your saved data.
One of the best practices in javascript unit testing is to decouple the tests. This is to minimize the dependencies…