Problem:
The customer reported that when the view's results are updated through AJAX, background images shown in the view's loop get missing.
Solution:
The view was using the 'acf' shortcode to get the background image URL from the ACF plugin's image type field.
But, when the AJAX operation was performed on the view, the value of that field was not becoming available, so suggested to replace it with the Toolset's 'wpv-post-field' shortcode.