How to retrieve a line from being folded?

Help
1

Things I have tried

Behavior: I noticed that if I have a line with text below a folding line, as long as the folding line is closed, the text continues there; but once I open the folding line and close it again, the line below it that wasn’t meant to be included now is swallowed to be part in the folding selection.

What I’m trying to do

Expected behavior: having the folding line only with what I put there, not whatever text below it.

2

In general lines are not folded, only blocks/sections. So if you fold a block, continue typing something which eventually will be part of the same folding section, it’ll for away on the next run.

What kind of section are you folding in your example here?