Class name of css-in-js overwritten after run build & serve

[gengengengengen]

Summary

Please forgive my pool English.

I am using the injectSheet HOC of 'react-jss' to styling my components.

When I run server in development mode, everything look good and class names between jss and elements are matched:

But when I run build & serve, the page shows wrong styles. The class names of jss become different from development mode:

This issue is similar to #8560 but the solutions in that issue didn't work with me.

Thanks a lot.

Relevant information

Environment

System: OS: Windows 10 CPU: (4) x64 Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz Binaries: Node: 10.16.3 - C:\nodejs\node.EXE Yarn: 1.19.0 - C:\Program Files (x86)\Yarn\bin\yarn.CMD npm: 6.9.0 - C:\nodejs\npm.CMD Browsers: Edge: 44.18362.387.0 npmPackages: gatsby: ^2.15.33 => 2.15.35 gatsby-image: ^2.2.24 => 2.2.27 gatsby-plugin-manifest: ^2.2.20 => 2.2.21 gatsby-plugin-offline: ^3.0.12 => 3.0.14 gatsby-plugin-react-helmet: ^3.1.10 => 3.1.11 gatsby-plugin-sharp: ^2.2.28 => 2.2.29 gatsby-source-filesystem: ^2.1.30 => 2.1.31 gatsby-transformer-sharp: ^2.2.20 => 2.2.21

File contents

gatsby-config.js: N/A package.json: N/A gatsby-node.js: N/A gatsby-browser.js: N/A gatsby-ssr.js: N/A

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[daniyals14]

i can replicate the same issue