Worked on the dailydotdev/apps repository to address a UI reliability issue affecting tooltip display after users switched browser tabs. The solution involved implementing an onMouseUp handler on the tooltip trigger, ensuring the tooltip properly blurs and regains visibility when the tab is revisited. This fix resolved a persistent bug where tooltips would fail to display or exhibit visual glitches during tab navigation. The work was completed using React and TypeScript, focusing on front end development best practices. Collaboration with a peer engineer contributed to code quality and shared understanding, resulting in a stable and user-friendly tooltip experience.