[wp-trac] [WordPress Trac] #64771: Existing block level custom CSS in a post breaks when the post is edited by user without unfiltered_html

WordPress Trac noreply at wordpress.org
Wed May 6 00:47:12 UTC 2026


#64771: Existing block level custom CSS in a post breaks when the post is edited by
user without unfiltered_html
-------------------------------------------------+-------------------------
 Reporter:  glendaviesnz                         |       Owner:  ramonopoly
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  high                                 |   Milestone:  7.0
Component:  Editor                               |     Version:  trunk
 Severity:  critical                             |  Resolution:
 Keywords:  has-patch has-unit-tests dev-        |     Focuses:
  feedback                                       |
-------------------------------------------------+-------------------------

Comment (by ramonopoly):

 > I can get a quick changeset up to update the comment for trunk if that
 helps.


 Patch for that here: https://github.com/WordPress/wordpress-
 develop/pull/11725


 @audrasjb [https://make.wordpress.org/core/handbook/best-practices
 /backporting-commits/#backport-process The docs] say that a different
 committer should backport [https://core.trac.wordpress.org/changeset/62257
 the original patch] to the release branch.

 Is that still the case? If so can someone help out? Thanks!

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/64771#comment:68>
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