BuddyPress.org

Found the translation bug.

In bp-events.php, line 2831

add_action ( 'plugins_loaded', 'events_load_textdomain', 9 );

should be

add_action ( 'plugins_loaded', 'events_load_textdomain', 1 );

As it was in 9 priority, it was loaded after

add_action( 'plugins_loaded', 'events_setup_globals', 5 );

That’s why the other strings loaded but not this one.