Issue:Tablesortcol will not sort in descending order

Description:
Extension / Version:	DPL   /   ?
Type / Status:	Bug   /   open

Problem

When trying to sort my table in descending order, using tablesortcol, I only get a random result. But the list works great when sorting ascending and also when sorting the first value in my list descending (tablesortcol= -1). What to do?

dpl
 categorymatch=%_backlog
  replaceintitle=/Product backlog\//,
  includepage={Story}:component:description:importance:estimate:how_to_demo:notes
  table=class=sortable, Name, Component, Description, Importance, Estimate, How to demo, Notes
  tablesortcol= -4
/dpl