Currently, new users are able to see PENDING edits on their own questions. They can also accept or reject this edit directly withouth the need to VOTE.
For new users there is more possibility that they will simply reject or overwrite edits as they are not trusted users.
My suggestion is simple: remove the option to REVIEW pending edits on your own questions for new users. These pending edits should ALSO be REVIEWED by trusted users.
Just to be specific: I am speaking in general and not about specific case.
Also consider the following situation: One posts question A. This gets answered. Then another one posts question B. This gets closed because it is similar than post A, but author of post A reverts / rejects all edits on his post. Yet post B is still closed