[wp-trac] [WordPress Trac] #45200: "isn't compatible with the block editor" added to non-editor metaboxes.

[WordPress Trac]

#45200: "isn't compatible with the block editor" added to non-editor metaboxes.
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 Reporter:  jsmoriss      |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Editor        |    Version:  5.0
 Severity:  major         |   Keywords:
  Focuses:                |
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 When metaboxes are added to plugin settings pages, WP 5.0 adds an error
 message that the metabox is not compatible with the block editor - even
 though this is NOT a block editor page. Setting {{{
 __block_editor_compatible_meta_box }}} to true in the add_meta_box()
 callback args does not help. An example screenshot from a plugin settings
 page (/wp-admin/admin.php?page=wpsso-essential) is attached.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45200>
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