Dynamic values update issue

Expected behavior: Dynamic values should update.

Describe the bug: Dynamic values don’t update.

Codesandbox link: https://codesandbox.io/s/material-demo-xivoe

const styles = {
  root: props => ({
    "@media print": {
      display: props.print
    }
  })
};

Versions (please complete the following information):

• jss: 10.0.0-alpha.17
• Browser [e.g. chrome, safari]: Chrome 74
• OS [e.g. Windows, macOS]: macOS
• Related issue: https://github.com/mui-org/material-ui/issues/16135

[kof]

This specifically happens with media queries. I can see that instead of updating the media query, it creates a new empty one.

cc @HenriBeck it might be related to the issue we have seen with styled-system and duplicated media queries.

[kof]

fixed in https://github.com/cssinjs/jss/pull/1242, releasing in 10.0.1