I have exactly the same problem. Hopefully there is a solution.
“I have installed Flatsome for a client and now I am encountering a weird problem.
As soon as I add / alter attributes, shipping or shopping data to the site, the text changes into a coded version. Only visible in the back.
The shipping and attributes do not appear on the website
I cannot reproduce it at my own website. (checked the plugins and all)
I do see differences in the editor.
I cannot undo this. Do you recognize this problem?”