In WPE I'm seeing, <select> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="opel">Opel</option> <option value="audi">Audi</option> </select> Rendered as just the string "Volvo" rather than as a drop-down box. Looks like a missing feature at the moment.
Related: https://github.com/Igalia/meta-webkit/issues/139