Fix bbPress pagination in BP Member's forum page

bp-custom.php

<?php
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * bbPress should include such an action into its `src/includes/extend/buddypress/members.php` file.
 */
function fix_bbpress_member_pagination( &$query ) {
	if ( bp_is_user() && bp_is_current_component( 'forums' ) ) {
		$action_variables = (array) bp_action_variables();

		if ( function_exists( 'bbp_get_paged_slug' ) && bbp_get_paged_slug() === bp_action_variable( 0 ) ) {
			$query->set( 'paged', (int) bp_action_variable( 1 ) );
		}
	}

}
add_action( 'bp_members_parse_query', 'fix_bbpress_member_pagination' );

We found an issue like this is BP Docs, too, where the pagination of our custom component had stopped working, but I think it had stopped working by BP v11.

Interesting, were you also using the paged query var ?

Yep! Something that used to work in the Docs plugin stopped working some time ago--I'm not really even sure when. Our fix was similar: Look specifically for the action args and set the page: boonebgorges/buddypress-docs@b1f39bb

This problem also exists on group pages so I had to adjust the code slightly for my own usecase. But everyone should be able to do this depending on their usecase.

FYI this will be fixed in BP Classic v1.4.0, see buddypress/bp-classic#44