I set max_prepared_statements = 1 in PgBouncer and attempted to create multiple prepared statements within a single transaction.

Expected Behavior:

PgBouncer should either prevent more than one prepared statement from being created, OR It should immediately delete the prepared statement after committing the transaction.

Actual Behavior:

PgBouncer allowed multiple prepared statements to be created and executed, even with max_prepared_statements set to 1.

Has anyone else encountered this issue? Is this the expected behavior, or am I missing a configuration setting?

PGBouncer: 1.21v PostgreSQL: 14.3v Pool mode: Transaction