Extended event timestamp bug still not fixed

I have SQL Server 2008R2 10.50 with SP1.

When running a black box query I am still getting incorrect event timestamps.  Any idea how to get the correct timestamp in this query?

Thanks.

SELECT CAST(target_data AS xml) AS TargetData
FROM sys.dm_xe_session_targets st
    INNER JOIN sys.dm_xe_sessions s ON s.address = st.event_session_address
WHERE name = 'system_health' and target_name = 'ring_buffer'
GO
;WITH 
XMLData AS (
    SELECT CAST(target_data AS xml) AS target_data
    FROM sys.dm_xe_session_targets st
        INNER JOIN sys.dm_xe_sessions s ON s.address = st.event_session_address
    WHERE name = 'system_health' and target_name = 'ring_buffer'
    )
,ErrorData AS (
    SELECT x.query('.') AS error
    FROM XMLData d
        CROSS APPLY target_data.nodes ('/RingBufferTarget/event') AS n(x)
    )
SELECT
	error.value('(event/@timestamp)[1]', 'datetime') as event_timestamp
    ,error.value('(event/@name)[1]', 'nvarchar(max)') as name
	,error.value ('(event/data[@name="error_number"]/.)[1]', 'int') AS error_number
    ,error.value ('(event/data[@name="severity"]/.)[1]', 'int') AS severity
    ,error.value ('(event/data[@name="state"]/.)[1]', 'int') AS [state]
    ,error.value ('(event/data[@name="user_defined"]/.)[1]', 'nvarchar(max)') AS user_defined
    ,error.value ('(event/data[@name="message"]/.)[1]', 'nvarchar(max)') AS [message]
	,error.value ('(event/action[@name="callstack"]/.)[1]', 'nvarchar(max)') AS callstack
	,error.value ('(event/action[@name="session_id"]/.)[1]', 'nvarchar(max)') AS session_id
    ,error.value ('(event/action[@name="database_id"]/.)[1]', 'int') AS database_id
	,error.value ('(event/action[@name="sql_text"]/.)[1]', 'nvarchar(max)') AS sql_text
    ,error.query ('(event/action[@name="tsql_stack"]/value/frames/.)[1]') AS tsql_stack
    ,error.query('.')
FROM ErrorData 
WHERE error.exist('event/.[@name="error_reported"]') = 1