Please add rule .diffchange-inline { white-space: break-spaces; }
because Google Chrome incorrect displays diffs with deleted trailing spaces, which tagged inside .diff-deletedline
. See Diff Test in Google Chrome.
Topic on Talk:VisualEditor/Diffs
https://test.wikipedia.org/w/index.php?oldid=460945&diff=460946&diffmode=visual renders fine; I think your issue is with the wikitext/non-visual diff? Yeah, that does look a little odd.
Oh, and you reported it on multiple irrelevant pages. Please don't do that.