In some cases, for example when only the message's format was changed, it is not easy to determine what the difference is between an original post and a new potential text.
Maybe it would be better to have the possibility, before decision-making, to view both texts in 'raw' mode (like in 'Edit' mode of a question or answer).
Another example when the 'raw viewing mode' can help is the case when the user has made a mistake in a message format and as a result some piece of text or image is invisible.
Now I cannot check the format of the original post and sometimes it is impossible to take a right decision "to accept the edit or not".
I'm talking about Review - Suggested Edits tool at review-beta.
I've attached two images to illustrate the issue.
The first review mode is not allowed me to check the original post.
And the same for the second mode. This is even worse - the code's block is gone.
I'm not able to view the format of the code's block, for example.