[wp-trac] [WordPress Trac] #52950: add_meta_box issue in wordpress 5.7

[WordPress Trac]

#52950: add_meta_box issue in wordpress 5.7
-------------------------------+-----------------------------
 Reporter:  daniyalkrl         |      Owner:  (none)
     Type:  defect (bug)       |     Status:  new
 Priority:  normal             |  Milestone:  Awaiting Review
Component:  Posts, Post Types  |    Version:  5.7
 Severity:  major              |   Keywords:
  Focuses:                     |
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 I recently moved to the new WordPress version 5.7 and now I am facing an
 issue in the add_meta_box function in function.php. The issue I am facing
 is the custom post type ID which I added in the add_meta_box function is
 conflicts with my custom post slug. Whenever I add a new post or open an
 existing post it shows a pre-generated slug from that custom post type
 without saving. Please see my code below.

  {{{#!php
 <?php
 add_meta_box(
         'cpt_1322',
         'Productions',
         'production_meta_post_callback',
         'cpt_1322',
         'side',
         'default'
     );
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/52950>
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