Index: bp-core/bp-core-catchuri.php
===================================================================
--- bp-core/bp-core-catchuri.php
+++ bp-core/bp-core-catchuri.php
@@ -628,8 +628,8 @@ function bp_get_canonical_url( $args = array() ) {
 		$front_page_component = array_search( $page_on_front, bp_core_get_directory_page_ids() );
 
 		// If requesting the front page component directory, canonical
-		// URL is the front page
-		if ( false !== $front_page_component && is_page( $page_on_front ) ) {
+		// URL is the front page (except on sitewide activity feed)
+		if ( false !== $front_page_component && is_page( $page_on_front ) && ! bp_is_current_action( 'feed' ) ) {
 			$bp->canonical_stack['canonical_url'] = trailingslashit( bp_get_root_domain() );
 
 		// Except when the front page is set to the registration page