XF 1.2 WWW and Tor hidden service at the same time with one xenforo


I want to offer my community the possibility to reach my service via Tor Hidden Service AND via "normal" World Wide Web.

I installed Tor on my machine and activated the hidden service for the necessary IPs, but it seems that xenForo is redirecting every request from xyz.onion to xyz.com .

Is there a solution, so that xenForo is not changing the domain?

Thanks in advance