ADS Version - Aqua Data Studio 15.0.0-dev-63
Operating Environment: Windows7 64-bit
Database - PostgreSQL 9.2
Steps to Reproduce
Connect to PostgreSQL database
Go to Database tree node
Right click on Database
Select Create Databse option
Create database window opened
In general tab
Enter database name as PUBLIC_H in name field
Select Template other than template0 from template drop-down list in my case I have selected "test_postgres"
Click on Create button
Right click on PUBLIC_H database
Select "Database Properties"
In Database Properties window Template field always display template0 but I have selected different template from drop drop list
Same issue occur in Greenplum also.
Please refer screen shot which I have attached