SQL - Why does Rank in Full Text Search change after Service restarted?

Question

I'm having some problem with the rank in full text search. I've updated the SQL to the latest build (11.0.7001.0). I ran the below query and got 108 records.

After restarting the service "SQL Full-text Filter Daemon Launcher (MSSQLSERVER)", it still returns 108 records.

After restarting the service "SQL Server (MSSQLSERVER)", the query returns only 100 records.

I'll have to rebuild the full-text catalog in order to get the same number of records as previous, which is 108 records.

SELECT DISTINCT * 
FROM(
    SELECT DISTINCT * FROM(
    SELECT *COLUMNS*
    FROM TABLE
    INNER JOIN FreeTextTable (TABLE, INDEXEDCOLUMN, N'"Sabariah Mohamed Ali" or "Ali Mohamed Sabariah"', 100) as KEY_TABLE ON TABLE.INDEX = KEY_TABLE.[KEY]  
    WHERE KEY_TABLE.rank > 30) as TABLE_1

    UNION ALL
    SELECT DISTINCT * FROM(
    SELECT *COLUMNS*
    FROM TABLE
    INNER JOIN Containstable (TABLE, INDEXEDCOLUMN, N'"*Sabariah" or "Sabariah*" 
    or "*Mohamed" or "Mohamed*"', 100) as KEY_TABLE on TABLE.INDEX = 
    KEY_TABLE.[KEY]  
    WHERE KEY_TABLE.rank > 30) as TABLE_1
) as TABLE_2