3.0.2 breaks setting src using rootPath

[halloweenman]

Description

When using 3.0.1 the code below works fine and the image is displayed, no issues:

<iron-image src="[[rootPath]]/images/thumbnails/myimage.png"></iron-image>

When using 3.0.2 the image is not displayed/found, and get the following error:

GET http://images/thumbnails/myimage.png net::ERR_NAME_NOT_RESOLVED

Expected outcome

Image gets displayed

Actual outcome

Image does not get displayed

Browsers Affected

All Browsers