Ticket #56855: 56855.2.diff

src/wp-includes/kses.php

@@ -2371 +2371 @@
                         'direction',
                         'float',
                         'list-style-type',
+                        'object-fit',
                         'object-position',
                         'overflow',
                         'vertical-align',

tests/phpunit/tests/kses.php

@@ -1112 +1112 @@
                                 'css'      => 'object-position: right top',
                                 'expected' => 'object-position: right top',
                         ),
+                        // `object-fit` introduced in 6.1.
+                        array(
+                                'css'      => 'object-fit: cover',
+                                'expected' => 'object-fit: cover',
+                        ),
                         // Expressions are not allowed.
                         array(
                                 'css'      => 'height: expression( body.scrollTop + 50 + "px" )',