I can confirm this issue with the manpage included in apport 2.17.2-0ubuntu1.1 on Ubuntu 15.04. Note that the manpage do mention apport-cli under options, and it looks like ubuntu-bug accepts the same options. These are documented in apport-cli, but this should be clarified somehow for those reading the manpage.
Since ubuntu-bug is an alias for apport-bug, this might be a duplicate of bug 1071930. It is at least a strongly related one.
Thanks for reporting.
I can confirm this issue with the manpage included in apport 2.17.2-0ubuntu1.1 on Ubuntu 15.04. Note that the manpage do mention apport-cli under options, and it looks like ubuntu-bug accepts the same options. These are documented in apport-cli, but this should be clarified somehow for those reading the manpage.
Since ubuntu-bug is an alias for apport-bug, this might be a duplicate of bug 1071930. It is at least a strongly related one.