Bug fix: Call to undefined end_ajax() method Bug fix: Use of PHP compact() function not working with PHP 7.3+
Bug fix: Sanitize `$_GET` parameter when triggering download for export Bug fix: Sanitize `$_GET` parameter when downloading backup file
Bug fix: `WP_Filesystem` initialized on all wp-admin pages Bug fix: Port not added to replacement URL when running a multisite migration Bug fix: For MySQL 8 compatibility, use uppercase `TABLE_NAME` column when getting table row counts
