Elementor Pro Posts Widget Is Not Filterable
Issue with Filters and Elementor Pro Post widget / Elementor Pro Portfolio widget
Click the Crocoblock > JetPlugins Settings tab on the WordPress Dashboard and proceed to JetSmartFilters > General Settings in the left-side menu bar.
Select only those widgets that you use the filter for: Elementor Pro Posts or Elementor Pro Portfolio. The remaining widgets should be inactive. Save the changes.
The next step is to set the filters with the Elementor Pro widgets. Therefore, open the needed page in the Elementor Page Builder.Click on the Pro Posts/Portfolio widget. In the Content section, find the Query tab. Proceed to the Query ID field and enter the following ID: jet-smart-filters.