On the demo page:

http://www.trirand.com/blog/phpjqgrid/examples/paging/scrollbar/default.php

if you scroll all the way down on the grid and then start scrolling up with the mouse wheel, the pages are not loaded corectly.

There are multiple ajax calls to load the previous page, where it should probably be only one.

I am not sure if it happens every time but it happens only with the mouse wheel scrolling.

So you can see from the OrderIDs that pages are repeated.

This seems to me as a serious bug and if somenone knows a workaround I would greatly appreciate it.

Note that this does not happen on scroll down, only on scroll up.