field:not(:last-child) does not work with layout builder

nayana_mvr → made their first commit to this issue’s fork.

The issue is reproducible in Drupal core 10.4.x version and I tried the proposed solution to fix it. Please find the before and after screenshot.

Before fix

After fix

UI changes should be noted in the summary with screenshots

MR should be against 11.x

nayana_mvr → changed the visibility of the branch 3471490-fieldnotlast-child-does-not to hidden.

Created a branch from 11.x branch and raised new MR against 11.x. Kindly review.

Looking at the fix don't believe this is the right location putting layout builder specific code into fields.scss

Since there was no specific style file for layout fields, I have created a new file under layout and attached the css. Please check if this is fine or kindly let me know if I can add it in any other existing style file.