[Play] Responsive Variant Groups do not seem to work

[ay13]

You can copy the below sample into the WindiCSS REPL at https://windicss.org/play.html

<div>
  <p class="text-1rem text-black mb-2 md:text-2rem md:text-red-600">
    NOT Responsive Variant Groups
  </p>
  <p class="text-1rem text-black mb-2 md:(text-2rem text-red-600)">
    Responsive Variant Groups
  </p>
</div>

Both lines should match font size and color as you pass the medium breakpoint but only the one NOT using Variant Groups does.