Browsers are implementing new mechanisms for tracking blocking to increase user's privacy, but as a result they are also blocking (some) 3rd party cookies.
- Chrome is treating cookies without SameSite attributes as SameSite=Lax. Plans to completely block 3rd party cookies in two years.
- Safari already blocks all 3rd party cookies.
- Firefox is considering next steps and will probably use SameSite=Lax by default (as Chrome does). Currently testing that in Nightly branch.
Prepare Keycloak and adapters for those changes and document the features that are affected by it and can't be fixed.