AJAX calls made multiple times [check full scenario]

Scenario:
* We have a view for search, exposed filter on it.
* We have configured exposed filter to be available as block
* We have the exposed filter form shown in header region, when user clicks search page is redirected to search page with params in GET
* On search page we now have form twice - once in the view and once in the top header (for my current scenario we actually have it thrice - once for mobile in menu)
* We have enabled AJAX for the view and enabled BEF to display the sort options

Final action and problem:
* when user sorts we are getting three AJAX calls made for getting the result