In the screenshot, in the first block, the line that is identical except one level of indentation is shown as text coming from two different lines on the left side.
The second block is okay.
In the third block ); mysteriously is taken as added text.
git --word-diff=color does not have this issue.
Screenshot from https://gerrit.wikimedia.org/r/#/c/394917/1/api/ApiQueryContentTranslationSuggestions.php