My WordPress does not save any changes in any post. I can create a new page or post and that one will be saved as 'Draft' but there is no content inside. When I make changes, press UPDATE it shows no error or something and the update button becomes inactive as it should. Then in a seconds a message appears saying 'The backup of this post in your browser is differ...'
I still able create new and edit plugin entities like ninja forms, sliders etc. without any problems. The issue affects builtin WP posts only.
Tried:
- Folders/files permissions: checked and ok.
- disable all plugins: did not help
- browser cache cleared: did not help
- switch to another browser: did not help
- latest version installed.
What else should I check?
For now, I can only change post content directly in DB field.