The 'Copy Project from Template' feature is not bring over the user running the feature as collaboration manager from the template to the project.
Steps to Reproduce:
Expected Result: To see administrator, res1, res2 and res3
Actual Result: You see administrator, res2 and res3 - but not res1
Manually add the user as a participant, and make them a collaboration manager.
This issue is documented as CLRT-72529 and is currently being reviewed by development.