Right side panel prevents navigation to content perspective without clear problem indication

Scenario:

1. Open a document with server-side field validator.
2. Make field invalid.
3. Click go to content perspective button.
4. Click save button in the modal dialog.

Problem: no server side validation performed and no navigation to the content perspective.

Expected behaviour: Response must be the same as when clicking the Save button in the right side panel: showing error banner & invalid fields.