Avoid losing post stickiness in the block editor

Thanks for the great plugin!

We’re using the block editor for our custom post type. Setting a post as sticky from Quick Edit works just fine for our use case. However, we’ve found that editing a sticky post in the block editor causes the stickiness to be lost.

The workaround I’ve implemented is this:

add_action(
	'block_editor_meta_box_hidden_fields',
	function ( $post ) {
		echo '<input type="hidden" name="sticky" value="' . esc_attr( is_sticky( $post->ID ) ? 1 : 0 ) . '" />' . PHP_EOL;
	}
);

The underlying problem is that the edit_post() function still fires when the block editor saves, and this logic unsticks the post unless sticky is present in $_POST: https://cln.sh/ycV65n