Design firm accuses Mozilla of UI plagiarism A Canadian interface design firm accused Mozilla of stealing user interface (UI) elements for a development tool in the browser maker’s Jetpack project, which aims to simplify add-on making. MetaLab of Victoria, British Columbia, leveled the charges Tuesday when the 11-person firm’s founder, Andrew Wilkinson, blogged about the similarities between his company’s designs and those posted by Mozilla for FlightDeck, a Jetpack editor