Comment From: philwebb
I'm not sure that we should add additional properties here since we currently also use them in AbstractServletWebServerFactory where we can't easily add equivelent support.
We have an open issue (#20971) to deal with the same-site property, but we're currently blocked.
Flagging to see what the rest of the team think.
Comment From: vpavic
IMO this again really boils down to #15047 (comment).
Comment From: philwebb
Thanks @vpavic, I had a feeling there was a better issue to link to but I couldn't find it. I think we should keep the customizer approach for now.