The created gzip files in unexpected directory

[kooriookami]

• Operating System:
• Node Version:
• NPM Version:
• webpack Version:
• compression-webpack-plugin Version: 6.0.0

Expected Behavior

Every gzip files should in correct directories.

Actual Behavior

The created gzip files are in unexpected directory. The version 5.x has no mistake.

Code

          new CompressionPlugin({
                test: /\.(js|css)$/,
                threshold: 10240, 
                deleteOriginalAssets: false
            }),

How Do We Reproduce?