If the filter URL is modified and the values of multiple-selection fields are changed intentionally (e.g. with an attempt to cause an error in the website or execute SQL injection), there would be a PHP error logged in the admin panel. However, this would not cause any visible errors or unexpected SQL queries. With this release, we have made sure these invalid values don't make their way to built-in XenForo functions that expect only valid values.
This version also fixes a compatibility issue with Elasticsearch 7.x versions.