One thing I noticed is if I sort my tapes by media set it is sorting out of order and without an invisible leading 0.
it's sorting by the actual text in the column as it appears. 1/14/2016 is sorting as older than 10/12/2015 and 11/4/2015 but not 2/16/2016. I think it's only sorting by the month and ignoring the year. I also think the month is sorted without a leading 0 so it's seeing october, november, and december as between january and february due to them all starting with a 1.