I've been testing it.
Yoast breadcrumbs are working fine, but meta titles are still handled by Yoast plugin.
The same happens with another plugin I have, some of the strings (not all) never get translation. Those strings are single entries of wp-options table, are included at my wpml-config.xml file and show up at polylang settings.
If you think useful to give you the credentials of the site, I will, so that you can better reproduce these issues, just let me know how can I send them for you.