BuddyPress.org

For those who are also not getting a navigation item, a temporary workaround:

Edit your header.php in your child theme, and add

<?php if ( bp_is_active( 'events' ) && bp_core_is_multisite() ) : ?>

<li<?php if ( bp_is_page( BP_EVENTS_SLUG ) ) : ?> class="selected"<?php endif; ?>>

<a href="<?php echo site_url() ?>/<?php echo BP_EVENTS_SLUG ?>/" title="<?php _e( 'Events', 'buddypress' ) ?>"><?php _e( 'Events', 'buddypress' ) ?></a>

</li>

<?php endif; ?>

to the #nav ul.