Scrollable listener triggers change detection

[tuanl]

Scrollable's listener triggers change detection even though the listener is registered within runOutsideAngular. Adding NgZone.assertNotInAngularZone() within the callback throws an error.

https://github.com/angular/material2/blob/0f6a2ecb3de533ec76ed1d0ea4ce9d574cfbc66a/src/cdk/scrolling/scrollable.ts#L35

[crisbeto]

@tuanl I couldn't reproduce it by adding a couple of console.log(NgZone.isInAngularZone()); before the listener is added as well as in the callback. Do you have a more concrete example and can you share what version of Angular and Zone.js you're running?

[mhevery]

This is related to: angular/angular#18753

[crisbeto]

Closing since the related core issue is fixed.

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