Content edited in the block editor disappears after saving or refreshing.
Gutenberg Editor Not Saving Changes
Key Points: You edit a page, click “Update,” and the changes don’t stick — or vanish entirely.
You tweak your layout, rearrange blocks, hit Update — and nothing. Or worse, your changes show in the editor but not on the frontend. Welcome to the Gutenberg ghost town.
🧪 Root Causes
- Autosave or REST API request failure
- Plugin conflicts (especially with custom Gutenberg blocks)
- Security rules (ModSecurity, etc.) blocking save requests
- Outdated or heavily customized theme interfering with block output
🛠️ Fix Strategy
- Open browser console and watch network tab while clicking “Update”
- Try editing the post with all plugins deactivated
- Switch to a default theme and test block saving behavior
- Check Site Health → REST API for errors
💬 Developer Insight
Saving content relies heavily on REST API. Any error in the request chain can silently cause data loss. Watch for 403 or nonce errors.