I found this issue on our local Phabricator installation, but you can also see a live example on https://secure.phabricator.com
Steps to reproduce:
# Visit https://secure.phabricator.com/diffusion/P/browse/master/src/ (this bug is not occurring in the root of the repo)
# Click on the history icon of a file or directory. It's the most left icon in the image below.
# There is no history, because the url does not include the path. The url is https://secure.phabricator.com/diffusion/P/history/master/__phutil_library_init__.php, but it should be https://secure.phabricator.com/diffusion/P/history/master/src/__phutil_library_init__.php
{F972167}