I have the same and I contacted my host (bluehost). The agent told me that my core files were fine and it was a false positive from the site health and it will just go away.
Thank you for your answer Olga.
I contacted him and he said there were no issues between the theme and jquery…
Sometimes the descriptions are not there but if I press a random link/b/i/img button in the text, then I go to previous page and then reopen the same post, the descriptions reappear.
There is something blocking the rendering of the descriptions and I still don’t find it
EDIT: currently investigating with YoastSEO, about a conflict with wp editor
