cannot set "install_on_shutdown" and "remove"

[enboig]

If I set:
class {'unattended_upgrades':
enable => '1',
install_on_shutdown => true,
auto => { 'reboot' => false, 'remove' => false, },
}
I get
Unattended-Upgrade::InstallOnShutdown "true";
Unattended-Upgrade::Remove-Unused-Dependencies "false";

Setting
class {'unattended_upgrades':
enable => '1',
install_on_shutdown => false,
auto => { 'reboot' => false, 'remove' => false, },
}
I get
Unattended-Upgrade::InstallOnShutdown "false";
Unattended-Upgrade::Remove-Unused-Dependencies "true";

Why I cannot get updates at shutdown and remove unused dependencies at the same time?

[enboig]

it appear to work... I will check and repost if necessary.