Re: Inconsistent tracker item resturns
I'm not sure if this will fix your issue, but for my Tiki, I added an Unfilter button to the UI because, as you discovered, if you apply a filter it is not easy to return to the full list.
See: http://www.stc-carolina.org/tiki-view_tracker.php?trackerId=4 for an example.
Basically, in the tiki-view_tracker.tpl I added:
{if $filtervalue ne ''} [<a href="tiki-view_tracker.php?trackerId={$trackerId}&{if $sort_mode}&sort_mode={$sort_mode}{/if}{if $status}&status={$status}{/if}">{tr}unfilter{/tr}]{/if}
;){kind=link}
;){kind=link}