[Tabs] Animation error

Bug, feature request, or proposal:

Bug

What is the expected behavior?

No errors

What is the current behavior?

MdTabBody.html:1 ERROR DOMException: Failed to execute ‘animate’ on ‘Element’: Partial keyframes are not supported. at WebAnimationsPlayer._triggerWebAnimation (http://localhost:4200/vendor.bundle.js:67793:35) at WebAnimationsPlayer.init (http://localhost:4200/vendor.bundle.js:67776:29) at InjectableAnimationEngine.DomAnimationEngine._queuePlayer (http://localhost:4200/vendor.bundle.js:67067:16) at InjectableAnimationEngine.DomAnimationEngine.animateTransition (http://localhost:4200/vendor.bundle.js:66982:14) at InjectableAnimationEngine.DomAnimationEngine.setProperty (http://localhost:4200/vendor.bundle.js:66853:18) at AnimationRenderer.setProperty (http://localhost:4200/vendor.bundle.js:94476:26) at DebugRenderer2.setProperty (http://localhost:4200/vendor.bundle.js:13622:23) at setElementProperty (http://localhost:4200/vendor.bundle.js:9897:19) at checkAndUpdateElementValue (http://localhost:4200/vendor.bundle.js:9816:13) at checkAndUpdateElementInline (http://localhost:4200/vendor.bundle.js:9750:24) at checkAndUpdateNodeInline (http://localhost:4200/vendor.bundle.js:12443:23) at checkAndUpdateNode (http://localhost:4200/vendor.bundle.js:12418:16) at debugCheckAndUpdateNode (http://localhost:4200/vendor.bundle.js:13047:59) at debugCheckRenderNodeFn (http://localhost:4200/vendor.bundle.js:13026:13) at Object.eval [as updateRenderer] (ng:///MdTabsModule/MdTabBody.ngfactory.js:183:5)

What are the steps to reproduce?

1. Create an md-tab-group inside another md-tab-group and set property selectedIndex to a local variable [(selectedIndex)]="innerTabIndex".
2. Open the page, select the last tab on the inner tab group, generally jump between tabs
3. See that it throws an error.

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

_                      _                 ____ _     ___

/ \ _ __ __ _ _ | | __ _ _ __ / | | | | / △ \ | ’ \ / _ | | | | |/ _ | '| | | | | | | / ___ | | | | (| | || | | (| | | | || | | | // __| ||_, |_,||_,|| _||| |___/ @angular/cli: 1.0.0 node: 7.9.0 os: win32 x64 @angular/animations: 4.0.1 @angular/common: 4.0.1 @angular/compiler: 4.0.1 @angular/core: 4.0.1 @angular/forms: 4.0.1 @angular/http: 4.0.1 @angular/material: 2.0.0-beta.3 @angular/platform-browser: 4.0.1 @angular/platform-browser-dynamic: 4.0.1 @angular/router: 4.0.1 @angular/cli: 1.0.0 @angular/compiler-cli: 4.0.1

Tested on latest Chrome

[monoflash]

The problem remains as it was or again appeared in the code. If slow, very slow move mouse over the matTooltip, then there is no error. But if move mouse a little faster, and hit the next tooltip, then a lot of errors take off.

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