TYPO3 Core

This has to be fixed in this line:
/sysext/recordlist/Classes/Controller/RecordListController.php:207

from

$this->search_field = (string)($parsedBody['search_field'] ?? $queryParams['search_field'] ?? '');

to

$this->search_field = (string)($parsedBody['search_field'] ?? $queryParams['search_field'] ?? $this->search_field);

(as $this->search_field is already set to '' a few lines above - or to the value from session if there was one)

Only happens in v10, fixed in v11.