Ticket #35894: 35894.2.diff

src/wp-includes/embed.php

@@ -777 +777 @@
 
         if ( ! empty( $content[1] ) ) {
                 // We have a blockquote to fall back on. Hide the iframe by default.
-                $html = str_replace( '<iframe', '<iframe style="display:none;"', $html );
+                $html = str_replace( '<iframe', '<iframe style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', $html );
                 $html = str_replace( '<blockquote', '<blockquote class="wp-embedded-content"', $html );
         }
 
@@ -953 +953 @@
  * @return string The filtered content.
  */
 function _oembed_filter_feed_content( $content ) {
-        return str_replace( '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="display:none;"', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $content );
+        return str_replace( '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $content );
 }
 
 /**

src/wp-includes/js/wp-embed.js

@@ -50 +50 @@
                                 continue;
                         }
 
-                        source.style.display = '';
+                        source.removeAttribute( 'style' );
 
                         /* Resize the iframe on request. */
                         if ( 'height' === data.message ) {

tests/phpunit/tests/oembed/filterResult.php

@@ -83 +83 @@
                 $html   = '<blockquote></blockquote><iframe></iframe>';
                 $actual = wp_filter_oembed_result( $html, (object) array( 'type' => 'rich' ), '' );
 
-                $this->assertEquals( '<blockquote class="wp-embedded-content"></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="display:none;"></iframe>', $actual );
+                $this->assertEquals( '<blockquote class="wp-embedded-content"></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"></iframe>', $actual );
         }
 
         function test_filter_oembed_result_allowed_html() {
                 $html   = '<blockquote class="foo" id="bar"><strong><a href="" target=""></a></strong></blockquote><iframe></iframe>';
                 $actual = wp_filter_oembed_result( $html, (object) array( 'type' => 'rich' ), '' );
 
-                $this->assertEquals( '<blockquote class="wp-embedded-content"><a href=""></a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="display:none;"></iframe>', $actual );
+                $this->assertEquals( '<blockquote class="wp-embedded-content"><a href=""></a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"></iframe>', $actual );
         }
 
         /**