[wp-trac] [WordPress Trac] #49997: Message "Deprecated: dbx_post advanced is deprecated since 3.7.0!" flashes before loading page editor

[WordPress Trac]

#49997: Message "Deprecated: dbx_post advanced is deprecated since 3.7.0!" flashes
before loading page editor
--------------------------+-----------------------------
 Reporter:  hedgehog90    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.4
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 The following message briefly flashes on the screen before the page editor
 loads.

 {{{
 Deprecated: dbx_post advanced is deprecated since 3.7.0! Use
 add_meta_boxes instead. in wp-includes/functions.php on line 5088
 }}}

 [[Image(https://i.imgur.com/NmDLaMU.png)]]

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Ticket URL: <https://core.trac.wordpress.org/ticket/49997>
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