BUG #17176: Error raised on valid query

The following bug has been logged on the website:

Bug reference:      17176
Logged by:          Peter Davie
Email address:      peter.davie@convergentsolutions.com.au
PostgreSQL version: 13.4
Operating system:   Windows 10 64-bit
Description:

Hibernate is generating the following query:
select distinct date_part('year', internalme0_.when_occurred) as col_0_0_,
date_part('month', internalme0_.when_occurred) as col_1_0_, date_part('day',
internalme0_.when_occurred) as col_2_0_, date_part('hour',
internalme0_.when_occurred) as col_3_0_, date_part('minute',
internalme0_.when_occurred) as col_4_0_ 
from InternalMessages internalme0_ 
group by date_part('year', internalme0_.when_occurred) , date_part('month',
internalme0_.when_occurred) , date_part('day', internalme0_.when_occurred) ,
date_part('hour', internalme0_.when_occurred) , date_part('minute',
internalme0_.when_occurred) , internalme0_.when_occurred 
order by date_part($1, internalme0_.when_occurred) asc, date_part($2,
internalme0_.when_occurred) asc, date_part($3, internalme0_.when_occurred)
asc, date_part($4, internalme0_.when_occurred) asc, date_part($5,
internalme0_.when_occurred) asc

The placeholders contain the values 'year', 'month', 'day', 'hour' and
'minute'.

The following error is generated when the query is executed:
ERROR:  for SELECT DISTINCT, ORDER BY expressions must appear in select list
at character 635

The Order By and Group By clauses are semantically equivalent.

I am in the process of raising a bug with the Hibernate team to correct the
generation of the query, however this query should be accepted.