Ticket #25773: 25773.diff

src/wp-includes/cron.php

@@ -168 +168 @@
                 $args = array_slice( func_get_args(), 1 );
         }
 
-        while ( $timestamp = wp_next_scheduled( $hook, $args ) )
-                wp_unschedule_event( $timestamp, $hook, $args );
+        $crons = _get_cron_array();
+        if ( empty( $crons ) )
+                return;
+        $key = md5( serialize( $args ) );
+        foreach ( $crons as $timestamp => $cron ) {
+                if ( isset( $cron[$hook][$key] ) ) {
+                        wp_unschedule_event( $timestamp, $hook, $args );
+                }
+        }
 }
 
 /**