Creating an element with Polymer:el uses the full webcomponents.js in the test files it produces

[akc42]

The Polymer:el script creates test html files with webcomponents.min.js script tags.

The advice here https://www.polymer-project.org/1.0/resources/compatibility.html#polyfill-browser-support

is to only use the lite version

[robdodson]

Fixed by https://github.com/yeoman/generator-polymer/commit/e9ef7b228f76d3d9f29031a8595d32c2aabe6174