During August 2025, Jakub Rozbicki focused on improving UI stability and moderation workflows for the GetStream/stream-video-js repository. He addressed a CSS issue that had hidden the blocked participants header, which was critical for moderator efficiency. By updating the display property from 'none' to 'flex', Jakub restored both visibility and interactive functionality to the header, allowing moderators to manage blocked participants without friction. His work demonstrated a solid understanding of front end development and CSS, applying targeted changes that directly aligned the user interface with product requirements. The contribution was focused, addressing a specific pain point with a precise technical solution.