https://core.trac.wordpress.org/ticket/57685?cversion=1&cnum_hist=1
#57685 (Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply changes to..." UI...
Blog Tool and Publishing Platform
https://core.trac.wordpress.org/ticket/57685?cversion=3&cnum_hist=1
#57685 (Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply changes to..." UI...
Blog Tool and Publishing Platform
https://core.trac.wordpress.org/ticket/57685?cversion=0&cnum_hist=13
#57685 (Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply changes to..." UI...
Blog Tool and Publishing Platform
https://core.trac.wordpress.org/ticket/57685?cversion=0&cnum_hist=18
#57685 (Deprecate the `edit_custom_thumbnail_sizes` filter and remove the "Apply changes to..." UI...
Blog Tool and Publishing Platform