Two things, 1. WP_LIST_TABLE is a private class and should not be used directly, as it can be changed with wordpress updates (meaning an update could break the plugins) as such I copied and created a local version just for each plugin. 2. Pagination was broken, pagination is shared in the wp_list_table class as such if you changed the page for one table, you changed it for the other and if one table has more pages than the other you can only see as far as the smallest number of pages. As such I changed it up a little bit so that pagination is handled individually for each (which is why there is seperate comment-class-wp-list-table.php and activity-class-wp-list-table.php files)