Task Aggregation not working with Approval Delegation functionality

Summary:

The task aggregation functionality is working fine with regular approval flows, but it is not working when the approvals are delegated.

Content (required):

Hello,

According to this document, the Task Aggregation on Configuration tab in BPM UI set to "Once per task" is helpful with restricting approval flows once per user.

I have discovered that while this is working as expected on the regular approval workflows, it is not working correctly when the approvals are delegated and a user is receiving twice the same approval request.

For example, our rule for the salary changes has the following workflow approval chain: