The Diff screen has no horizontal scrollbar and doesn’t do text wrapping, so if you have a line of text which is longer than the viewport is wide the text will be cut off and there is no way to read it.
This has been a persistent quality of life issue for a long time.
In the screenshot below there are two places where this happens:
- Long script paths (first red box)
- Long lines of code (second red box)
(my second example here is synthetic since I zealously enforce line length limits in my code, partially because of this issue)