Drupal 7 – Filter form not displaying in Views Block Display
If you have a view that exports a filter form, you may find that the form is not displayed when the view is rendered in a block as a ‘block display’, even though it may display perfectly in a ‘page display’ as part of the same view.
This problem had me rather worried until I came across this post, simply changing the ‘Use AJAX’ view setting to ‘Yes’ seems to solve the problem (at least it did for me! ;-))
To change this setting, click on the ‘Advanced’ area in the view’s settings, and in the section called ‘OTHER’ you will see a setting called ‘Use AJAX’, change this to ‘Yes’ and hopefully your filter form will now display as part of your block view!