BUG #17286: Installing open source edition of PostgreSQL 11.14 will fail

The following bug has been logged on the website:

Bug reference:      17286
Logged by:          Marrow Yung
Email address:      marrow.yung@gmail.com
PostgreSQL version: 11.14
Operating system:   windows server
Description:

when install open source edition of PostgreSQL 11.14 on top of a Window
server 2012 R2 box which ALREADY has a earlier version of PostgreSQL
installed with collation other than default one, the installation of
PostgreSQL 11.14 or other version ALSO will collation other than the default
one, the installer will fail and no PostgreSQL windows service will be
installed.

the second PostgreSQL installation only works if it use default collation
.
I want more than one PostgreSQL instance on the SAME windows server box to
use other collation , e.g. traditional chinese (Hong Kong)