Locate the widget displaying offsets (likely in a disassembly or hex view widget). The fix involves applying a monospaced font (e.g., 'Courier New' or QFontDatabase) to those specific widgets. Check the existing stylesheet or font settings in the Cutter GUI code (e.g., in `src/widgets/` or `src/core/`). Use the Qt property system or a global stylesheet to set the font family to monospace for offset labels.