Cannot add SSTP interface to a bridge

I used to be able to add an sstp interface to a bridge in order to get an “internal” IP from a remote network.
I don’t have that choice anymore. I tried adding it to an interface list and then add it to the brigde, which I am allowed but this doesn’t work.

I am using it to get an “internal” ip from a remote LAN and access it as if I where there.
I have been using it for years but suddenly (I don’t know since which version), I am not allowed

my bad I forgot I had to add an eoip to add it to the bridge