OpenVPN port-share redirect (was!) not working

[Alfred]

As a handy alternative, I have my 2nd OpenVPN server available at TCP:443 instead of the standard UDP:1194
However, I also prefer to have my NAS available over https:443
For this I added the following custom configuration in the advanced settings:
port-share <internal NAS IP> 443

This redirects Non-OpenVPN traffic.
Until some time ago this worked like a charm, but since then the port-share redirection feature doesnt seem to work anymore.
Can anyone confirm this?
Can it be fixed?

 

[Alfred]

Nevermind...
Just solved my own mystery after weeks of pulling my hair out.
It appears that in my hunt for NAS-awaking traffic some time ago, I made a firewall rule on the NAS that denies any traffic originating from the router.
Normally that is ok, but for port-share it is not because OpenVPN replaces the original source IP with its own - the router.
I feel rather stupid...