[BUG] mat-autocomplete doesn't close using displayWith under IE11

[kevincaradant]

Bug, feature request, or proposal:

Bug
Similar to: #5165 (not duplicate)

What is the expected behavior?

mat-autocomplete-panel should be close after selected an option

What is the current behavior?

mat-autocomplete-panel continues to be opened even after to have selected an option

What are the steps to reproduce?

Run the stackblitz: https://stackblitz.com/edit/angular-gieptd

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

Angular 5.2.0
Node: 8.6.0
MAterial: 5.1.0
Windows 7 Pro 64 bits
TypeScript: 2.6.2

NB: For the moment, the workaround consists to use the reset function available on the formControl. IE11 worls properly in this context

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