MACD Histogram Changes Past Values

["Hinton Clabaugh" <hgciii@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I run TS 2000i with IB data. On a five minute chart, sometimes I will
see an MACD histogram bar change after the fact. For example, the
MADiff may have been -100 at 10:20am.  Later, at 10:40am, the market
having rallied and subsequent values having printed higher, lo and
behold the 10:20 bar now shows MADiff at  -50 or even +100.

Has anyone else experienced this? Is there a fix? I would sometimes
like to go back to the past with present knowledge in my trading, but
it is disconcerting for an indicator to do this.