I found what causes the problem, it was the Hyper Cache Extended plugin, I really dont enderstand how it scwrewed up the display of changes in post for unregistred users :confused:
If someone had the same problem with this plugin i’ll be delighted to receive your advices 😉
I also completely modified an old article but changes are only visible to registered users.
I’m using griffin theme, if it helps.
The last thing I modifed was the functions.php to add “sign-in with Twitter” bur erasing the modification don’t make a change.
