Since a couple of months, the modal shortcode is broken. Even on your demo site, https://demo.mageewp.com/magee-shortcodes-demo/modal-shortcode/, the large and the medium examples are broken, and instead of just an anchor button, the modal text is spilled out onto the website and ends with a snippet of html code: ” data-effect=”” data-close_icon=”yes”>.
It would seem there’s an unescaped quotation mark somewhere.
I’ve checked with Safari 10.0.3, Firefox 51.0.1, and Opera 42.0. Screenshot is here:
I’m having the same exact issue. I originally thought the demo page for Modal was broken. But, when I tried adding a Large Modal to my site, http://www.augustawestco.com, the exact same problem appeared there as what you see above.
Please look into this! Modal is one of my favorite options!