Insert a section into a scene beat (Used to preserve old prose).
Fill in the title of the section.
Then I tried to paste in the prose, the section simply deleted itself, just gone.
Not down to lagging or connectivity, the cursor is responsive.
I know this as I instead typed in a few characters; after which I pasted the prose successfully.
This is a new 'thing', an embedded section did not self-delete when I pasted content.