Firefox on W7P64 weird boxes not showing choices on indexing sites. Don't know how to state this so attaching a picture. Happens on other sites with lists & sorting options. https://www.sub-titles.net/
it seems your browser does not support or render fonts correctly.if you are using a modified browser,try resetting it to its default state. try disabling your content blocker add-on or extension if you have any which might be blocking remote fonts.also if the following preference is set to false,set it to true under about:config: "dom.storage.enabled"
eg. fontawesome and "glyphicon halflings", both webfonts. somthing is blocking. reset that option in your webfilter(s)! #edit dont block webfonts - they are used nowerdays, bad idea unset "block remote fonts" https://github.com/gorhill/uBlock/wiki/Dashboard:-Settings please read more of the wiki to understand function from ublock - that filter is not set by default!