Kunena will error as well and suspect many other extensions will too. It's due to a change in the backend menu XML structure. We're only specifying the view while Joomla is expecting a link attribute. Not sure why or when this behavior was changed, but added a bug ticket to investigate further as we need to be sure making changes here won't break CB backend menu creation.
forge.joomlapolis.com/issues/9278
You can workaround this by using a menu type of System > URL then set the URL to the following.
index.php?option=com_comprofiler&view=showusers