[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
Tue Mar 31 17:40:23 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:  (none)
     Type:  defect (bug)                          |      Status:  new
 Priority:  high                                  |   Milestone:  7.0
Component:  Editor                                |     Version:  trunk
 Severity:  critical                              |  Resolution:
 Keywords:  has-patch has-unit-tests 2nd-opinion  |     Focuses:
--------------------------------------------------+---------------------
Changes (by audrasjb):

 * keywords:  has-patch has-unit-tests => has-patch has-unit-tests 2nd-
               opinion


Comment:

 As per today's bug scrub:

 We have several options with this one:
 1. Revert the whole block level css feature and punt it to 7.1
 2. Find a solution for the issue on this feature during the small amount
 of time we have until 7.0 is released
 3. Show a simple warning notice and punt a more complete solution to 7.1

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/64771#comment:47>
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