Not using transactions but receiving errors with: Resetting connection with an active transaction

• asyncpg version: 0.29.0
• PostgreSQL version: 15.6
• Do you use a PostgreSQL SaaS? If so, which? Can you reproduce
  the issue with a local PostgreSQL install?: Local Postgres
• Python version: 3.11.8
• Platform: Linux
• Do you use pgbouncer?: No
• Did you install asyncpg with pip?: Yes
• Can the issue be reproduced under both asyncio and
  uvloop?: Yes

I'm using a connection pool and doing individual connection.execute however if there's any kind of error with the SQL I will get an error that asyncpg is trying to rollback the transaction.

I'm very specifically not trying to use transactions at all.

app.ctx.crate_pool = await asyncpg.create_pool(**CRATE_DB_CONFIG, loop=loop, max_size=10)

async with app.ctx.crate_pool.acquire() as connection:
    await connection.execute("INSERT INTO table1 (col1, col2, col3) values ($1, $2, $3)", var1, var2, var3)

If there's a conflict on the insert I will receive the following error:

Resetting connection with an active transaction <asyncpg.connection.Connection object at 0xffffa51cfc40>
InternalServerError("line 1:1: mismatched input 'ROLLBACK' expecting {'SELECT', 'DEALLOCATE', 'FETCH', 'END', 'WITH', 'CREATE', 'ALTER', 'KILL', 'CLOSE', 'BEGIN', 'START', 'COMMIT', 'ANALYZE', 'DISCARD', 'EXPLAIN', 'SHOW', 'OPTIMIZE', 'REFRESH', 'RESTORE', 'DROP', 'INSERT', 'VALUES', 'DELETE', 'UPDATE', 'SET', 'RESET', 'COPY', 'GRANT', 'DENY', 'REVOKE', 'DECLARE'}")
Traceback (most recent call last):
  File "/af_events/af_events.py", line 2377, in get_userconfig
    ret_status = await connection.execute(sql, *vals_arr)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 353, in execute
    _, status, _ = await self._execute(
                   ^^^^^^^^^^^^^^^^^^^^
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 1794, in _execute
    result, _ = await self.__execute(
                ^^^^^^^^^^^^^^^^^^^^^
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 1892, in __execute
    result, stmt = await self._do_execute(
                   ^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 1925, in _do_execute
    stmt = await self._get_statement(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 433, in _get_statement
    statement = await self._protocol.prepare(
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "asyncpg/protocol/protocol.pyx", line 166, in prepare
asyncpg.exceptions.InternalServerError: ERROR:  duplicate key value violates unique constraint "var2"
DETAIL:  Key (var2)=(test1) already exists.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/af_events/af_events.py", line 2376, in get_userconfig
    async with app.ctx.crate_pool.acquire() as connection:
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/pool.py", line 219, in release
    raise ex
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/pool.py", line 209, in release
    await self._con.reset(timeout=budget)
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 1500, in reset
    await self.execute(reset_query, timeout=timeout)
  File "/root/.cache/pypoetry/virtualenvs/allfactors-sanic-pIZXgjO4-py3.11/lib/python3.11/site-packages/asyncpg/connection.py", line 350, in execute
    result = await self._protocol.query(query, timeout)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "asyncpg/protocol/protocol.pyx", line 374, in query
asyncpg.exceptions.InternalServerError: line 1:1: mismatched input 'ROLLBACK' expecting {'SELECT', 'DEALLOCATE', 'FETCH', 'END', 'WITH', 'CREATE', 'ALTER', 'KILL', 'CLOSE', 'BEGIN', 'START', 'COMMIT', 'ANALYZE', 'DISCARD', 'EXPLAIN', 'SHOW', 'OPTIMIZE', 'REFRESH', 'RESTORE', 'DROP', 'INSERT', 'VALUES', 'DELETE', 'UPDATE', 'SET', 'RESET', 'COPY', 'GRANT', 'DENY', 'REVOKE', 'DECLARE'}

traceback は、duplicate key により connection.execute が失敗した後の reset の asyncpg/connection.py と release の asyncpg/pool.py を指しています。まず、報告された PostgreSQL セットアップに対して pool acquire、失敗する INSERT、release のシーケンスを再現してください。reset が ROLLBACK を送信する理由を特定し、想定される処理を文書化またはテストできれば完了です。