macropolo

I’m also tried to figure this out, and I find the solution.
To achieve this result you should change variable value in “wp-math-captcha/includes/class.core.php”.

Change
$rnd_input = mt_rand( 0, 2 );
to
$rnd_input = 2;

And input box will always be at the end.

Now all previews works perfectly, thanks Sami!

This is exactly you guys are saying?

Yes, I suppose.

I create page
https://www.example.com/foo
save it as draft, and when I press “Preview” I see it without problems
https://www.example.com/?page_id=4779&preview=true

Then, if I change url for something different, for example
https://www.example.com/foobar
link in for preview became
https://www.example.com/foobar&preview=true
and since then I see 404, because url redirect to https://www.example.com/foobar

I found the piece of code that causes this issue

From line 187:

if ( $posts[0]->post_status == 'draft' ) {
      $originalUrl = "?p=" . $posts[0]->ID;
    } else {
      $originalUrl =  preg_replace( '@/+@', '/', str_replace( trim( strtolower($posts[0]->meta_value),'/' ),
                    ( $posts[0]->post_type == 'page' ?
                        custom_permalinks_original_page_link($posts[0]->ID)
                        : custom_permalinks_original_post_link($posts[0]->ID) ),
                     strtolower($request_noslash) ) );
    }
  }

When I replace this part in lastest version with old code from v 0.7.24 previews of pages works.

Old code:

$originalUrl =  preg_replace( '@/+@', '/', str_replace( trim( strtolower($posts[0]->meta_value),'/' ),
                  ( $posts[0]->post_type == 'page' ?
                      custom_permalinks_original_page_link($posts[0]->ID)
                      : custom_permalinks_original_post_link($posts[0]->ID) ),
                   strtolower($request_noslash) ) );

But, also I found out that previews of posts not working with old code.

So with version 0.7.24 I can preview pages, but not posts. And in version 0.7.25 and higher I can preview posts, but not pages.

Hi Sami. I just tried few versions, I replaced custom-permalinks.php without deactivating plugin. When I upload 0.7.24 everything works perfect, but when I upload 0.7.25 or higher previews not working and instead I see 404. Previews work with posts in any version, problem appear with page preview and custom post type preview.

I confirm, issue exist in 0.7.25, and in my case, it appeared in last version. With old versions I didn’t have any problem.