Steps to reproduce:

5.0

1. Navigate to Administration->Users
2. Select guest user
3. Select Permissions tab and change User type
4. Open Monitoring side bar item in a new tab
5. Observe an error

6.0, 6.2

1. Navigate to Administration->Users
2. Select guest user
3. Select Permissions tab and change Role
4. Open Monitoring side bar item in a new tab
5. Observe an error

master

1. Navigate to Users->Users
2. Select guest user
3. Select Permissions tab and change Role
4. Open Monitoring side bar item in a new tab
5. Observe an error

Result:

Expected:
New tab opens user configuration page.