Authors differ between commits/all and Recent Activity

We are developing using a shared tree on our host and using $HOME/.gitconfig settings to override the repository's user.name and user.email setting.

https://bitbucket.org/btcfoundation/bwb-login-via-email shows the correct author attribution per commit under "Recent activity" at right, but https://bitbucket.org/btcfoundation/bwb-login-via-email/commits/all must be pulling its author data from a different source.