After selecting plugins to update, the plugin update button is very inconspicuous, meanwhile the main WP Update button is sat there in vivid blue beckoning people to click on it, that's twice I’ve done it now - luckily my host has twice daily backups.
(I’m currently trying to stay on 4.9.9 as I’m not yet sure what will happen re: CP and WooCommerce extensions.)
Yes, it’s the Wordpress updates page. I just get the feeling I"m being tricked into updating the core Wordpress. Although I’m sure it’s always been like that