CKEditor 5 text selected in a rich text field (wysiwyg) has invisible background when used inside a modal dialog

Created on 4 July 2024, 5 months ago
Updated 5 July 2024, 5 months ago

Problem/Motivation

When selecting a portion of text in a WYSIWYG field using CKEditor 5 inside a modal dialog, the selected text does not have the usual background color, causing confusion for editors who think nothing has been selected.

Steps to reproduce

This is my current setup:

  • Drupal Core 10.2.6
  • Layout Builder module is enabled
  • Custom subtheme of bootstrap_barrio active
  • "Gin" as the active Administration theme

The problem occurs only when using CKEditor in Layout Builder through a modal dialog. In other scenarios, like a regular WYSIWYG field on a node form, it works correctly.

It is unclear if a combination of enabled modules, themes, or specific configurations could be causing the problem.
The issue began after updating Drupal Core from 9 to 10.
The problem persists across different themes.

Proposed resolution

Similar to other problems documented for CKEditor when used inside a modal dialog (e.g., https://www.drupal.org/project/drupal/issues/3328425 🐛 CKEditor 5 balloons invisible when CKEditor 5 is used inside a modal Needs work ), I propose adding the following CSS to the CKEditor's editor.css stylesheet. This will force the browser to show the expected background color on selected text:

.ui-dialog .ck-editor p::selection {
  color: var(--font-color);
  background: var(--ck-color-link-fake-selection);
}

As mentioned above, the issue persists across different themes, which indicates it is not theme-specific, that's why I'm proposing applying the workaround directly to the CKEditor CSS file.

Remaining tasks

  • Test
  • Get maintainer approval
🐛 Bug report
Status

Active

Version

11.0 🔥

Component
CKEditor 5 

Last updated about 5 hours ago

Created by

🇨🇴Colombia camilo.escobar

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