By mherchel on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
11.2.x
Introduced in version: 
11.2.0
Issue links: 
https://www.drupal.org/node/3374901
Description: 

Previously Single Directory Component CSS was added to the “default” aggregate group. The new behavior is to add it to the “theme” aggregate group.

The net effect of this is that SDC CSS will now get lumped in with theme CSS (irregardless if the SDC is in a module or theme).

This fixes a CSS source order bug where SDC CSS was injected before any theme CSS (including base and layout styles). This bug was typically worked around by adding otherwise unnecessary specificity into the component’s CSS. This workaround is no longer necessary.

Before

Screenshot of view source showing that the SDC CSS is injected way before the themes CSS

After

Screenshot of view source showing that the SDC CSS is now injected way before the correctly within the themes component CSS

Impacts: 
Themers