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

[WordPress Trac]

#52950: add_meta_box issue in wordpress 5.7
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 Reporter:  daniyalkrl         |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Posts, Post Types  |     Version:  5.7
 Severity:  major              |  Resolution:
 Keywords:                     |     Focuses:
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Comment (by ravipatel):

 @daniyalkrl
 use this link for support.
 https://wordpress.org/support/

 I have test your code work fine for me. one time test in fresh wp setup.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52950#comment:1>
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