This sounds a lot like https://bugs.launchpad.net/swift/+bug/1837819 -- this may have been fixed by https://github.com/openstack/swift/commit/3189410 .
This sounds a lot like https:/ /bugs.launchpad .net/swift/ +bug/1837819 -- this may have been fixed by https:/ /github. com/openstack/ swift/commit/ 3189410 .