Responding to https://wordpress.org/support/topic/problem-with-inline-equations/ made me look at https://github.com/boolesrings/Simple-Mathjax-wordpress-plugin/blob/7bf526c723ed2904c97a99281fe4b2f8428d65aa/simple-mathjax.php#L357-L358 and this got me wondering if perhaps the configuration should also hook into `wp_enqueue_scripts` rather than `wp_head`. cc @christianp @scoskey.