Tobias focused on stabilizing Quick Terminal window geometry for the ghostty-org/ghostty repository, addressing persistent display issues on older macOS versions. He implemented a caching mechanism for window geometry and refined initial frame handling, ensuring reliable startup and preventing corruption. Using Swift and SwiftUI, Tobias also introduced a targeted workaround for platform-specific quirks, reducing edge-case failures and improving user experience. His work emphasized maintainability and minimal risk to existing features, with changes delivered through concise, well-documented commits. This focused engineering effort demonstrated depth in macOS development and UI/UX design, resulting in a more robust and reliable terminal application.