Ticket #51707: 51707.patch

src/wp-includes/kses.php

@@ -2171 +2171 @@
          * @since 5.3.0 Added support for `grid`, `flex` and `column` layout properties.
          *              Extend `background-*` support of individual properties.
          * @since 5.3.1 Added support for gradient backgrounds.
+         * @since 5.6.0 Added support for `white-space`.
          *
          * @param string[] $attr Array of allowed CSS attributes.
          */
@@ -2232 +2233 @@
                         'text-decoration',
                         'text-indent',
                         'text-transform',
+                        'white-space',
 
                         'height',
                         'min-height',