"post_updated" hook not working properly with Gutenberg

[giuse]

The "post_updated" action hook doesn't work properly when Gutenberg is active.
The content passed to $post_after and $post_before of the following example is always the same, no matter if you change something in the content before the post saving.

Disabling Gutenberg all works as normal.

add_action( 'post_updated','my_post_updated_function',99,3 );


function my_post_updated_function( $post_ID, $post_after,$post_before ){
    //$post_after and $post_before are always the same if Gutenberg is active
}

[donmhico]

Hello @giuse,

Thank you for the bug report. I tried to do some investigating and what I found out is that when doing an "Update" using Gutenberg the post_updated action which is supposedly just to fire once is firing twice. The first time provides the correct $post_after and $post_before. The second time, both variables has the same values, most probably because on the 2nd fire, no changes happened.

This bug might be related to this as well - ​https://github.com/WordPress/gutenberg/issues/11976.

[SergeyBiryukov]

Related: #47576

[peterwilsoncc]

Thanks for the report @giuse.

This is being tracked in #45114 so I'm going to close this ticket as a duplicate so conversation can be kept in one place.