Editor cannot edit a document saved as draft from the admin in Experience Manager

Steps to reproduce:

1. Login as admin
2. Go to Experience manager
3. Open a channel and then open a document for editing
4. Keep draft
5. Login as editor
6. Go to the same document from step 3
7. Try editing it

Expected result:

The document is draft and you cannot edit it.

Actual result:

The document is locked by admin