Looks like the Content View can fail to load when (in parallel) an Object State group is deleted while a Content Item is published

Happened on Travis, where two actions happened at the same time:

  [2019-12-19 02:23:57] Starting Step success notification that "Content published." appears
[2019-12-19 02:23:58] Ending Step notification that "Object state group" "Test Object State Group edited2" is deleted appears [] []

This failed with an error:
"An exception has been thrown during the rendering of a template ("Could not find 'ObjectState' with identifier 'array('groupId' => 3,)")."
thrown from "locationview.html.twig" template

Steps to reproduce (theoretical):
1. Login as admin
2. Go to Admin -> Object States
3. Create a new Object State Group
4. Create a new Object State
5. Start creating a new Content Item
6. Delete the created Object State
7. At the same time publish the Content Item and delete the Object State Group

Application should fail with the error mentioned above.