10.3.0 breaks CKEditor Font Size and Family module

Your analysis only takes into account the element that you reference, but in fact there is the disappearance of the normal display of the body on the article and page components.
This bug is blocking because it prohibits any creation of articles or pages.

I think I've found the origin of the problem I'm having with the body of Article and Page.
After several installations, proceeding by gradually adding a module, the problem arises with : ckeditor_font:^2.0@beta'
Although installed with composer, the implementation of any element: Font Size, Font Color, Font Family, Font Back-ground Color causes the bug that blocks the normal display of page or article.

Re-titling to make it clearer what the issue is, this probably needs to be moved to the contrib module.

See to : https://www.drupal.org/project/drupal/issues/3457991 🐛 10.3.0 breaks CKEditor Font Size and Family module Active

issue also present with
CKEditor Font Size and Family 2.0.0-beta3 as well as beta4

Drupal 10.3 PHP 8.3.8 MariaDB 10.5.15-MariaDB-cll-lve

Following log error

domainname/node/14/edit
Entity view display 'node.article.default': Component 'comment' was disabled because its settings depend on removed dependencies.

Both Font Color and Font Background Color work perfectly. The issue shows up when Font Size or Font Family are attempted.

slewazimuth you are right. The bug is only with Font Size, Font Family and also when the CKEditor5 Line Height module is used

Marking duplicate of 🐛 Incompatibilidad con Drupal 10.3.0 Postponed: needs info .