Ticket #45206: 45206.patch

wp-admin/includes/template.php

@@ -1052 +1052 @@
                                         if ( false == $box || ! $box['title'] )
                                                 continue;
 
-                                        // Don't show boxes in the block editor, if they're just here for back compat.
-                                        if ( $screen->is_block_editor() && isset( $box['args']['__back_compat_meta_box'] ) && $box['args']['__back_compat_meta_box'] ) {
-                                                continue;
-                                        }
+                                        if ( is_array( $box[ 'args' ] ) ) {
 
-                                        // Don't show boxes in the block editor that aren't compatible with the block editor.
-                                        if ( $screen->is_block_editor() && isset( $box['args']['__block_editor_compatible_meta_box'] ) && ! $box['args']['__block_editor_compatible_meta_box'] ) {
-                                                continue;
-                                        }
+                                                // Don't show boxes in the block editor, if they're just here for back compat.
+                                                if ( $screen->is_block_editor() && isset( $box['args']['__back_compat_meta_box'] ) && $box['args']['__back_compat_meta_box'] ) {
+                                                        continue;
+                                                }
 
-                                        $block_compatible = true;
-                                        if ( isset( $box['args']['__block_editor_compatible_meta_box'] ) ) {
-                                                $block_compatible = (bool) $box['args']['__block_editor_compatible_meta_box'];
-                                                unset( $box['args']['__block_editor_compatible_meta_box'] );
-                                        }
+                                                // Don't show boxes in the block editor that aren't compatible with the block editor.
+                                                if ( $screen->is_block_editor() && isset( $box['args']['__block_editor_compatible_meta_box'] ) && ! $box['args']['__block_editor_compatible_meta_box'] ) {
+                                                        continue;
+                                                }
 
-                                        if ( isset( $box['args']['__back_compat_meta_box'] ) ) {
-                                                $block_compatible |= (bool) $box['args']['__back_compat_meta_box'];
-                                                unset( $box['args']['__back_compat_meta_box'] );
+                                                $block_compatible = true;
+                                                if ( isset( $box['args']['__block_editor_compatible_meta_box'] ) ) {
+                                                        $block_compatible = (bool) $box['args']['__block_editor_compatible_meta_box'];
+                                                        unset( $box['args']['__block_editor_compatible_meta_box'] );
+                                                }
+
+                                                if ( isset( $box['args']['__back_compat_meta_box'] ) ) {
+                                                        $block_compatible |= (bool) $box['args']['__back_compat_meta_box'];
+                                                        unset( $box['args']['__back_compat_meta_box'] );
+                                                }
                                         }
 
                                         $i++;