The option "User who triggered the event" does not work for Branch created trigger in Jira automation

Issue Summary

When using the Branch created trigger in Jira automation, The option "User who triggered the event" does not work to set the branch creator as the assignee of the issue related to the branch.

Steps to Reproduce

1. Integrate both Jira and Bitbucket applications
2. Create the following automation rule in one of your integrated projects:
   
3. Navigate to any issue of the project and click to create a branch:
   

Expected Results

The issue is assigned with the user who created the branch

Actual Results

The issue is not assigned.

Workaround

None so far.