Wrong line in a PR code output

The PR shows a wrong line https://bitbucket.org/hipchat/web/pull-requests/2516/hc-33899-user-undelete-v1-to-v2/diff#Ltests/PageObjects/api/test_users_api.pyF7T8 that doesn't touched by any commit. All current commits was overwritten by git push --force and in one of previous commits this line was existent.