Hustle Bug with @media

Scenario is as follows, custom css for:

@media (min-width: 1000px) {
   .someclass {
      background-color: red;
   }
}

Will be converted to this in an upfront site when site is being viewed:

.inc_optin_1  

@media (min-width: 2000px) {

.wpoi-hustle .wpoi-optin {
    background:  inherit !important;} .inc_optin_1
{} .inc_optin_1
{}

Which I think is a BUG.

Thanks.