Worked on the infiniflow/ragflow repository to enhance the document preview experience by addressing a critical UI issue in the DocPreviewer component. Focused on front end development using React and TypeScript, the work involved resolving a bug where .docx document previews were truncated and could not be scrolled, which previously hindered users from accessing full content and citations. By applying an overflow-auto style to the DocPreviewer root, the solution ensured seamless scrolling across all screen sizes. This targeted fix restored full visibility of referenced documents, improving the accuracy and efficiency of knowledge-base reading and collaborative workflows for end users.