During December 2024, Jon OvS focused on maintenance and reliability improvements for the facebook/react-strict-dom repository. He addressed a critical bug in the PostCSS configuration, ensuring that both source files and node_modules were properly processed for React styles. By refining the postcss.config.js setup using JavaScript and front end development skills, Jon prevented environment-specific styling regressions that could disrupt developer workflows. This work did not introduce new features but prioritized stability, reducing debugging time and improving consistency of styling across local and CI environments. The depth of the fix reflects a strong understanding of React and build toolchains.