Scheduled posts delete iframes (filter HTML) on publish

[uplink3r]

This is a follow-up to #22944. I have noticed this bug in WordPress 4.0, it's identical to the one in the mentioned ticket.

[uplink3r]

I discovered it's being caused by a plugin that I wrote but here is the code for the plugin (slightly refactored). Obviously this code should do almost nothing as presented here.

function do_the_save( $post_id ){
	$content = get_post_field('post_content', $post_id);
	remove_action('save_post', __METHOD__);
	wp_update_post( array('ID' => $post_id, 'post_content' => $content) );
	add_action('save_post', __METHOD__);
}
add_action('save_post', 'do_the_save');

[collinsinternet]

While I was able to duplicate your issue with your code, I do not feel that this is a WP Core issue.

The disconnect happens at wp_update_post() in your code where content gets sanitized. You could remove the 'content_save_pre' filter prior to wp_update_post() to resolve your issue.

remove_filter('content_save_pre', 'wp_filter_post_kses');
wp_update_post( array('ID' => $post_id, 'post_content' => $content) );
add_filter('content_save_pre', 'wp_filter_post_kses');

[johnbillion]

Replying to collinsinternet:

While I was able to duplicate your issue with your code, I do not feel that this is a WP Core issue.

This is definitely a core issue.

This is a duplicate of #19373.

In addition, the tests added in [1174/tests] aren't adequate because the current user object is present, unlike when scheduled posts are published via WP-Cron.