Views pane field exclusion not honored on AJAX BEF submission

I'm using Better Exposed Filters with a views pane which is included in a panel node to filter the contents via AJAX. I have fields exposed to the content managers of panels to be excluded, which works great until an end-user (anonymous or authenticated) selects an item on the rendered page and the result is fetched via AJAX. At which point, all field exclusion is ignored. I have tried passing the filter value as a query string and it works fine, but as soon as a views AJAX request is sent the exclusion is no longer honored.

this is a cross-post from panels.module