Steps to reproduce:
1. Create any web project and invite any user (as Content Publisher or Content Contributor);
2. Create any web content on User's Sandbox (e.g. On Publisher's or Contributor's ) and do not unlock it;
3. Log in as the user and try to submit the content by clicking Submit action -> the action isn't present, the file can't be submitted;
4. Select the locked file and click "Submit Selected" link or "Submit All" link -> the locked file can be submitted.
The locked file can't be submitted.