You cannot disable the "Like" functionality; you can only disable notifications of new Likes (which is disabled by default).

It would be helpful that if you're seeing display problems, you give us some additional information -- such as the kind of web browser you're using to access the forums (e.g., Chrome or Firefox), and the stylesheet theme you're using (e.g., default).

We can then more effectively try and see what you're seeing, so we can fix it. Thanks!

DocJohn