I am having the same issue with Reactive Pro + ACF Pro + CPT UI. When creating a search block nothing displays in the front end. For 1 taxonomy I am able to see that it loads in admin view but when switched to front end it won’t display unless I use the hovering filter button near the bottom of the screen. In which case, I can see most of the filter I select but not all. I then switched to Reuse Builder to test compatibility but having issues displaying shortcode on the front end. If I can’t display the meta data in a single post then creating a search block will no be useful. Hope an update fixes the issues on either plugin.