[wp-trac] [WordPress Trac] #57685: Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply changes to..." UI in the image editor

[WordPress Trac]

#57685: Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply
changes to..." UI in the image editor
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 Reporter:  azaozz        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  6.3
Component:  Media         |     Version:  6.0
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by azaozz):

 Currently there seems to be 1 plugin and 0 themes that mention the
 `edit_custom_thumbnail_sizes` filter. The plugin doesn't really use it, it
 only adds a reference/description for it.

 Frankly I'm really tempted to recommend to just remove it. This will not
 result in any errors, and seems any plugins or themes will not stop
 working either.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57685#comment:1>
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