Input placeholder do not animate correctly while there is a autocomplete list.

[flowfire]

Bug, feature request, or proposal:

The placeholder of input box with autocomplete list below, won't animate correctly.

What is the expected behavior?

The placeholder move & scale by transition.

What is the current behavior?

The placeholder just move without any animation

gif:

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

@angular/cli v1.3.0
@angular/animation 4.3.4
@angular/material 2.0.0-beta8

[CarstenHouweling]

Can confirm

@angular/cli v1.2.6
@angular/animation v4.3.3
@angular/material v2.0.0-beta.8

[willshowell]

Duplicate of #5755

[jelbourn]

Duplicate of #5755

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