WireGuard works with client connected via cellular but not via WiFi

[klausdude]

Hi,

I successfully created the WireGuard setup via the documentation on opnsense but it will only work from my mobile devices when I connect via cellular.
When I am on another (local) WiFi network, it seems that it cannot resolve the internal IP numbers (192.168.1.1/24) from my home network.
Any suggestions?

Best,
Klaus