Broken diff display on native Mercurial without git
On py-heptapod!76 (merged), both global changes and per-commit diffs have this message for each file: "" instead of actual file diff content. The same happens when looking at the commit outside of MR context.
It is not directly due to the native migration, which occurred some months ago on py-heptapod.
It is not a systematic problem, here are some other examples that work as intended: