Delete this task
I can't reproduce this issue by following the steps in your report.
To move forward:
- provide reproduction steps which work in a clean environment; or
- we'll close this report in a few days if we don't receive the information we need.
That's the big problem, the logs say nothing.
This is where I can tell you, the httpd logs, I repeat does not say anything about a bug related to phabricator.