Unrelated diff in mail from like notification

Reproduction steps

1. User A has mail notifications allowed for like events on page X
2. User A edit page X
3. User B likes page X
4. User A received the notification email
5. Check the mail content

Expected

The mail contains only details about B liking page X.

Actual

The mail also contains diffs about changes done by user U, which are unrelated to the fact that B liked page X.

Real world example