Title is necessary for page. Currently when saving page with empty title, request goes to backend resulting in blue error screen. Frontend validation should be added to tell user to fill the title when he tries to publish page without it.

Inspired by https://warsaw-dynamics.atlassian.net/servicedesk/customer/portal/1/SUP-445 , but the error found by client is different (for the client no title parameter is sent at all, where as during my local tests empty value for this parameter is sent when value is removed). It is possible that client’s issue will need some more investigation.