css-Isolation not working in rspack example

[varunraval9]

I have checked css-isolation example where i run app2 (isolated app) in webpack it works as it should, but when i run it using rspack serve it does not.

i check webpack.config.js

there is css loaders are applied as below

     {
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader',
            options: {
              insert: require.resolve('./styleLoader.js'),
            },
          },
          'css-loader',
        ],
      },

but there is no configuration added in rspack.config.js

i have tried same configuration in rspack , but no css applied.
it seems to me that rspack does not support options.insert.

[ScriptedAlchemy]

Consider filing an issue on rspack if you think there's a problem with css loader.