app-location deletes query string parameters

[Antoine Goutagny]

Description

app-location removes query string parameters from the location.

Expected outcome

I use an app-location tag in my component to obtain query string parameters, like this;

<app-location route="{{route}}" query-params="[[queryParams]]"></app-location>

One would expect to have a queryParams object containing query string values as key/values.

Actual outcome

The url is rewritten with the query string completely removed. queryParams object in my component is undefined.
I first noticed this when moving from polymer 2.0-rc7 to 2.0.1, and app-location from 2.0-preview to 2.0.

Live Demo

https://api-1913.s3-eu-west-1.amazonaws.com/index.html?foo=bar

Steps to reproduce

1. Ad an app-location to your element
2. Open the page in a web browser, add a query string, e.g. ?foo=bar
3. See query string being removed.

Browsers Affected

• Chrome
• Firefox
• Safari 9
• Safari 8
• Safari 7
• Edge
• IE 11
• IE 10

[Antoine Goutagny]

Duplicate of #194 , had not seen it before.