BUG #18010: Bug with installation/auto-configuration

The following bug has been logged on the website:

Bug reference: 18010
Logged by: Mariuszw
Email address: emigrantstudio@gmail.com
PostgreSQL version: 16beta2
Operating system: Debian 12 Bookworm
Description:

Setting up postgresql-16 (16~beta2-1.pgdg120+1) ...
update-alternatives: error: alternative path
/usr/share/postgresql/16/man/man1/postmaster.1.gz doesn't exist
dpkg: error processing package postgresql-16 (--configure):
installed postgresql-16 package post-installation script subprocess
returned error exit status 2

My repo file:
deb http://apt.postgresql.org/pub/repos/apt bookworm-pgdg 16