The lack of horizontal scrolling in side-by-side diffs of code-blocks during the review process often makes the process somewhat challenging. Here is an example that prompted me to finally speak up about this.
Now, I expect that horizontal scrolling has probably been disabled so that the reviewer doesn't miss important changes, but I believe this does more harm than good. Sure, I can see all the changes side-by-side, but it's not at all easy to see whether the edit is an improvement.
In normal display of a question or answer, horizontal scrolling in code-blocks is enabled. If I want to examine the layout before and after, I need to drill into the revision stack and edit individual revisions in order to see a preview. Because I can no longer see the actual changes as a diff, the whole review process is undermined.
May I recommend that horizontal scrollbars can be enabled on code-block reviews? Even better would be a check-box that allows me to toggle horizontal scrolling and/or enable preview without diff.
Note that, by the time I finished writing this question, Meta had finally provided a similar question in the sidebar, but it appears to have had little attention. So please accept this more fully-formed question as a follow-up.