[Icon] Medium size replaced with Medium brand icon

[AdrienLZ]

You can't size an icon with medium size because it display the "medium" brand icon instead of changing the size.

<i class="large tag icon"></i> <!-- Display the tag icon with large size -->
<i class="medium tag icon"></i> <!-- Display the medium icon with default size -->

Example: https://jsfiddle.net/s5wqvbd6/

[lubber-de]

There does no medium size exist for icon.
medium size is considered default without any size classes
See https://jsfiddle.net/rLwhxgef/