slide-toggle doesn't work as expected with EdgeBrowser and IE11

[wuchtig]

Bug, feature request, or proposal:

Slide-toggle doesn't work as expected with EdgeBrowser and IE11.
Click thumb works.
Drag thumb works but it flips back

What is the expected behavior?

Slide-toggle should work with drag thumb

What is the current behavior?

What are the steps to reproduce?

Look at Material Demo Site or the Plunker

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

MSEdge: 41.16299.15.0
Material: 5.0.0-rc0-3ca801a

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