Preview of code.quarkus site doesn't contain a version picker

Preview of code.quarkus site[1] doesn't have dropdown menu for choosing a stream. Both upstream[2] and RHBQ 2.13[3] sites have this menu

[1] https://code-3-2-0-final-redhat-00002.apps.ocp-c1.prod.psi.redhat.com
[2] https://code.quarkus.io/
[3] code.quarkus.redhat.com/