RabbitMQ with the "Specified Later in Workflow" option does not work.

[joaohedler]

Bug Description

When you add a RabbitMQ trigger to consume a queue and enable the options (Specified Later in Workflow) and (Parallel Message Processing = 1) and add a Wait node before the Delete Queue Node, n8n does not delete queue the Rabbit and she stays Unacked forever.

To Reproduce

1. Add a queue in RabbitMQ of type Quorum and add 10 messages.
2. Create a workflow with the RabbitMQ trigger
3. In the trigger, enable the options (Specified Later in Workflow) and (Parallel Message Processing = 1)
4. Add the "Wait" node and configure it to wait 3 minutes.
5. Add the Queue Deleter node at the end.
6. Activate Workflow and see the bug.

Expected behavior

I expect it to delete from the queue after the Wait node.

My goal is to consume 1 message from the queue every 3 minutes.

But I can't because the message stays as Unacked forever.

Operating System

Debian GNU/Linux 12

n8n Version

1.71.1

Node.js Version

20.18.0

Database

PostgreSQL

Execution mode

queue

[Joffcom]

Hey @joaohedler,

We have created an internal ticket to look into this which we will be tracking as "GHC-595"