Worked on the emilk/egui repository to address a stability issue in viewport rendering, focusing on crash prevention when a parent viewport is hidden. The solution involved refining the rendering logic to ensure that descendant viewports continue to display correctly, even if their parent is not visible. This fix was implemented in Rust and validated on the WGPU backend, improving the reliability of complex nested layouts in front end applications. The work demonstrated careful attention to code quality and collaborative development practices, with changes co-authored and reviewed through a pull request process to ensure adherence to project contribution standards and guidelines.