Found the solution. Just add this to at the end of tablepress.php:
/**
* BUG: Search integration is not fully functional. When search for keayords
* such as “the”, “project”, “in”, “form”, the plugin prevents results from
* being displayed.
*
* As per plugin author, the quickest solution is to disable the “search” integration
* all together. See code below.
*/
add_filter( ‘tablepress_wp_search_integration’, ‘__return_false’ );
It works! Tobias, thank you for the quick response.
Cheers,
Raul