Ticket #35973: 35973.3.patch

src/wp-includes/class-wp-image-editor-imagick.php

@@ -84 +84 @@
                         return false;
                 }
 
+                // HHVM Imagick does not support loading from URL, so fail to allow fallback to GD.
+                if ( defined( 'HHVM_VERSION' ) && isset( $args['path'] ) && preg_match( '|^https?://|', $args['path'] ) ) {
+                        return false;
+                }
+
                 return true;
         }