[wp-trac] [WordPress Trac] #48698: Update fails if there’s a "Custom Html" block and an Iframe inside it

[WordPress Trac]

#48698: Update fails if there’s a "Custom Html" block and an Iframe inside it
--------------------------+------------------------------
 Reporter:  ozgurnevres   |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Editor        |     Version:  5.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
--------------------------+------------------------------

Comment (by JarretC):

 Hello! I've tried replicating this issue but not having any luck.

 I add a new Custom HTML block into a post, then input the following into
 the input field

 {{{<iframe>testing</iframe>}}}

 Then press Update and it succeeds without error. I'm also able to view the
 iframe on the front end of the site. If you have any plugins activated or
 not using a default theme such as Twenty Twenty/Twenty Nineteen/etc,
 please  try deactivating all plugins and switching to a default theme.

 If you still have the issue, please reply with more details here on how to
 replicate further.

 Thanks!

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/48698#comment:1>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform