Ticket #60055: 60055.01.diff

src/wp-includes/class-wp.php

@@ -356 +356 @@
                 // Convert urldecoded spaces back into '+'.
                 foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) {
                         if ( $t->query_var && isset( $this->query_vars[ $t->query_var ] ) ) {
-                                $this->query_vars[ $t->query_var ] = str_replace( ' ', '+', $this->query_vars[ $t->query_var ] );
+                                // Query vars passed via REST API can be an array after r50157.
+                                if ( is_string( $this->query_vars[ $t->query_var ] ) ) {
+                                        $this->query_vars[ $t->query_var ] = str_replace( ' ', '+', $this->query_vars[ $t->query_var ] );
+                                } else if ( is_array( $this->query_vars[ $t->query_var ] ) && isset( $this->query_vars[ $t->query_var ]['terms'] ) && is_array( $this->query_vars[ $t->query_var ]['terms'] ) ) {
+                                        foreach ( $this->query_vars[ $t->query_var ]['terms'] as $key => $term ) {
+                                                $this->query_vars[ $t->query_var ]['terms'][ $key ] = str_replace( ' ', '+', $term );
+                                        }
+                                }
                         }
                 }