I'm using the latest version of Tablesorter. Haven't checked the rest of the plugins yet. Some of them may not be the latest version.
But first I want to ask: could this have anything to do with using drag n drop in the same table?
I'm using drag n drop to drag rows from the tbody section to the tfoot section. The row stays at the tfoot section unti I click the column name (and by doing this using tablesorter) and then the row gets removed from tfoot and added back to the tbody.
There is one row in tfoot with the class name subhead, which is not part of the drag n drop functionallity and is always at top of the tbody. At least this row stays the same.
<tfoot class="ui-sortable" id="3">
<tr class="subhead" id="3-0"><td>Subheadline</td></tr> /* Stays the same */
<tr class="track" id="2-7"><td>Drag N Drop Row</td></tr> /* Gets transferred back to tbody */