1. add extension with workflow
2. registere and use workflow
3. remove extension without unregistering workflow or purging objects using workflow.
4. try to unregister/remove workflow - ez publish fatals with message error:
Fatal error: Call to a member function validateHTTPInput() on a non-object in /var/www/ezpublish/kernel/workflow/edit.php on line 206
Fatal error: eZ Publish did not finish its request
The execution of eZ Publish was abruptly ended, the debug output is present below.
EZP-17974Unable to modify/remove workflow if workflow extension is deactivated