since yesterday no visible content in widgets (only text, html)

Hi @jaroslawistok,

There might be a broken widget block content saved in the db?

Was it working before?

You can install the Classic widget plugin to see if you are able to edit the widgets with that:
https://wordpress.org/plugins/classic-widgets/

It worked more than 10 years I guess. I have never seen this before. I only use classic widgets and editor. I dont like this new things on wordpress without asking us ?

You can try to remove all widgets and then save to see if that fixes it.

Also, you can turn on debug mode to see if there’s a fatal error while saving the widgets:
https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/

Insert this BEFORE /* That’s all, stop editing! Happy blogging. */ in the wp-config.php file

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

Then, try to save the widgets and see if there’s a PHP error:
wp-content / debug.log

Later, you can turn off debug with false value and remove this log file.

Bit complcate for me. But the widget will be saved and shown. Only the visible part in admin is not to see. Only text/html