time/dated, last Post Icon ?

[softcock]

It's always baffled me on Main Page Discussion topis & Thread & Post, time/dated, w/ last Post Icon ?
Hope I can explain what I am talking about
when I Left-click on ( last Post icon ) that is offered on the far Right-Side of Thread . The time/dated Icon that lets you see the last Post made of the leading #1 Thread of that discussion topic .
( for example ) Snipers Hide Photo Thread . and ... 8/27/13 'Snipers' in Aleppo, Syria.
You Click on ICON and you go direct to last Post of that Thread & can read it .
But if you go to the Left side & click for the Thread topics of discussion . It does not exist in the Date/timed thread orderly line-up ? ( It is way down lower on the page ).
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edit add :
Why is this ( Snipers Hide Photo Thread ) not kept n a time/date order like all other forum discussions . It is presented all mixed-up & different .
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