The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/14/manage-ag-templatedbs.html
Description:
The documentation for creating databases from templates is incomplete, and
should mention that access privileges are not copied. So, for example,
issuing:
create database newdb with template existingdb owner someuser;
results in the newly-created database lacking the access privileges that
exist in the template.
cf: https://www.postgresql.org/docs/13/manage-ag-templatedbs.html