Hi,

I'm writing a lot of my courses in Org with a final export to Beamer/PDF.

Recently, I tried to improve the slides for a course I gave last year. When I opened the org file, I got a very weird coloring, as if a section was not closed correctly. You can find the org file and a screenshot of the rendering here:
https://seafile.emse.fr/d/f689a4318aff4e12a72e/

What's VERY strange to me is that whatever (sub)sections of the org original file I extract and yank/paste in another org file, then everything is OK...

Any idea what could be wrong?

-- 
Guillaume MULLER