WordPress 5.0.2 Enfold 4.5.2 problem

After updating Enfold to 4.5.2 with WordPress 5.0.2
(when i was on Enfold 4.5.1 it was the same)
On some page, existing Text Block work fine.
And on some other page, i’m unable to edit them, because it’s blank and when i click on it, it contains some weird text (like if there’s is all the html page in the text box)
Other problem : When i duplicate a page, i can’t edit text block for the same reason.
I’m afraid of loosing data so i’ve made no update.
(sorry for my english, i’m french)
More information in private content
Thank you.