In Filter tab you will see 2 fields Execution Status and Status. Execution Status as name says will have the latest execution of the test case (No Run if not yet executed).
Status field in filter tab represents the DESIGN status of the Test Case that is, if the test case is ready or is in Review etc. This is different from the Status field you in Execution grid. In Execution Grid it will be Status field of Test Instance (test cases in Test Lab)
Status field in filter tab represents the DESIGN status of the Test Case that is, if the test case is ready or is in Review etc. This is different from the Status field you in Execution grid. In Execution Grid it will be Status field of Test Instance (test cases in Test Lab)