Invalid "TestRunStatus" CF value when non-final statuses are considered

Steps to reproduce:

1. Uncheck Final statuses have precedence over non-final statuses
2. Set No version to all Custom Fields preferences
3. Create a Test
4. Go to an existing Test Exec (TE-A), add the Test
5. Execute it to PASS
6. The testrunstatus is PASS
7. Create a new Test Execution
8. Execute it to Fail
9. Testrunstatus is FAIL
10. Go to Test Execution TE-A, remove Test and it again
11. testrunstatus is FAIL
12. remove test from testexecution (TE-A)
13. go to Test, add Testexecution (TE-A)
14. testrunstatus is TODO