I can see the problem in your website, the problem is: those pages are assigned with an empty content template.
I have done below modifications in your website:
1) Activate Toolset Views plugin
2) Dashboard-> Toolset-> Content Templates-> Usage for single page hidden link
in row "Pages", click the "Clear" button, it can remove the connection between all the pages and the empty content template.
Test it in front-end: hidden link
It works fine, please check if it is fixed, thanks
I have tried it again in your website, with below steps:
1) Edit the problem post: hidden link
Add some text into post content,
2) Test it in front-end: hidden link
It works fine, I can see those added text, is there anything missing?
Please provide detail steps to reproduce the same problem:
If we edit its data in the backend, after we update the content is gone from the frontend.
Thanks for details, I have done below modifications in your website:
1)Deactivate WPML plugins, and reactivate them
2) Dashboard-> Toolset-> Content Templates: hidden link
It works fine now.
3) Edit the problem post: hidden link
Assign it with content template "Template for Competitors"
Test it in front-end: hidden link
It works fine now.
You can assign this content template to all other "Competitors" posts here: hidden link
in section "Usage", click button "Change usage", and click button "Bind 8 Competitors"