Renaming user will leads to broken JQL in reports

Summary

Renaming a user will leads to broken JQL in reports in JSD/JIRA 7.1.6

Steps to Reproduce:

1. Create new user 'test' in JIRA SD a make him an agent.
2. Assign a task to 'test' user.
3. Go to Project Reports , for example Workload.
4. Click on the number of Issues in progress across this agent. The list of issues will open in a new Navigator window. The JQL is:

assignee = test AND resolution = Unresolved AND project = XXX

5. Change the username of agent 'test' into 'test1'
6. Go to Project Reports , for example Workload.
7. Click on the number of Issues in progress across this agent. The list of issues will not open then.

Expected Results

Able to list the correct issues and JQL:

assignee = test1 AND resolution = Unresolved AND project = XXX

Actual Results

The JQL is:

assignee = test AND resolution = Unresolved AND project = XXX