Problem: How to filter view by custom field of third party plugin/theme which stores serialize data.
Solution: You can use 'wpv_filter_query" filter to filter your view with custom fields with serialize data.
When displaying a View listing posts, this filter is applied to the arguments being generated by the View settings before they are passed to the WP_Query class. That means you can add/remove query on fly.
You can find the proposed solution with the following reply: https://toolset.com/forums/topic/custom-field-query-filter/#post-404625
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