postionTarget + center + middle centers on body

[moodyjmz]

Description

Target + center + middle does not work as expected

Expected outcome

I expected it to center vertically and horizontally onto the target

Actual outcome

It centers onto the body

Live Demo

https://www.webcomponents.org/element/PolymerElements/iron-fit-behavior/demo/demo/index.html

Steps to reproduce

• Choose a target
• Select center + middle

Browsers Affected

• [x] Chrome
• [x] Safari 11
• [x] Firefox
• [ ] Safari 9
• [ ] Safari 8
• [ ] Safari 7
• [ ] Edge
• [ ] IE 11
• [ ] IE 10

Not tested other browsers, but expect same outcome

[gregorymachon]

+1

[pramoch]

+1