Doesn't work with views_fluidgrid

Great module and I enjoy it a lot until I found a bug related to this module and views_fluidgrid views_load_more.

If the div element intended to do parallax comes after a views_fluidgrid element (ajax loading) => then it doesn't work. Because the value of $this.offset().top; and $window.scrollTop() are too far away (in my case > 6000) => which cause the background image doesn't shown at all.

To reproduce it:
- Enable two module parallax_bg and views_fluidgrid( https://www.drupal.org/project/views_fluidgrid → ) and views_load_more ( https://www.drupal.org/project/views_load_more → )
- Create a view block display that is using views_fluidgrid, enalbe views load more link also
- Place fluidgrid block display in row1 (from panel)
- Row2 (from panel) below row1, we do parallax for its background image.
It will not work and inspect row2 element while the mouse is scrolling we will see that the style="background-position: 0px XXXXpx;"
Since XXXX is >5000 for my case, I can't see the parallax effect on the background image.
This number is come from the formula in the code as:
Math.round($this.offset().top - $window.scrollTop()) * speedFactor

Further check I do see the $this.offset().top seem to take into account of part of element of row1 that will be loaded by ajax while $window.scrollTop() doesn't.

Any fix is appreciated.