Hi,
Sorry for the delayed response. This issue is caused by the option to only require HTTPS on some pages in WooCommerce. Our script is loaded by the same protocol as the page (https, if the page is https), but it gets redirected back visit back to plain http, since it’s not one of the pages where HTTPS is forced.
You can prevent the issue for now, by turning off “Enable Live Traffic View” near the top of the Wordfence options page — this stops the script from being loaded. (Some of the Live Traffic features will still work while this is enabled.) This script is affected while other .js files aren’t, because this one is processed through WordPress as part of the live traffic feature, instead of just being a plain .js file that the web server could read directly.
Alternately, if the site were set up to use HTTPS throughout the whole site, it should prevent the issue as well, since the script request won’t be redirected to plain http.
This will be changed to avoid the problem in an upcoming version (reference number FB965), but I don’t have a date for when that will be yet.
-Matt R