I tracked down what was causing this bug. Unfortunately, I don't the proper permissions to touch the associated files. Boone, perhaps you can take care of this? Included below are the changes.
file: wp-content/plugins/buddypress/bp-groups/bp-groups-widgets.php
change: in function groups_ajax_widget_groups_list() [line 84] the wrapping <ul> [~line 105] needs to be removed/commented-out (and don't forget to do the same to the closing tag </ul>)
file: wp-content/plugins/enhanced-buddypress-widgets/enhanced-bp-widgets.php
change: lines 70-72 should be changed from:
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="newest-members" <?php if ($instance['member_default'] == "newest") { ?> class="selected" <?php } ?>><?php _e( 'Newest', 'buddypress' ) ?></a> |
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="recently-active-members" <?php if ($instance['member_default'] == "newest") { ?> class="selected" <?php } ?>><?php _e( 'Active', 'buddypress' ) ?></a> |
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="popular-members" <?php if ($instance['member_default'] == "newest") { ?> class="selected" <?php } ?>><?php _e( 'Popular', 'buddypress' ) ?></a>
to:
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="newest-members" <?php if ($instance['member_default'] == "newest") { ?> class="selected" <?php } ?>><?php _e( 'Newest', 'buddypress' ) ?></a> |
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="recently-active-members" <?php if ($instance['member_default'] == "active") { ?> class="active" <?php } ?>><?php _e( 'Active', 'buddypress' ) ?></a> |
<a href="<?php echo site_url() . '/' . BP_MEMBERS_SLUG ?>" id="popular-members" <?php if ($instance['member_default'] == "popular") { ?> class="popular" <?php } ?>><?php _e( 'Popular', 'buddypress' ) ?></a>