First of all, thanks for reporting this issue, it will be fixed in the next release (v1.11.0). Redirecting from root path "/" is a special case and we need to treat it in a special way.
Also in v1.11.0 we will include a lot of improvements in the redirection manager, including a new feature to redirect a complete domain (domain forwarding). Any request to this domain will be redirected, not only "/".