Does angular 2.0 store values of variables on server side?

I cloned official angular 2.0 quick start project and tried to add a side-navigation panel. I created a simple component which contains the following:

export class AppComponent {
menuVisible: boolean = false;
toggleVisible() { this.menuVisible = !this.menuVisible; }
}


And simple template (pug):

side-navigation([class.visible]="menuVisible === true")
div(*ngIf="!menuVisible", (click)="toggleVisible()", style="cursor: pointer; font-size:1vw") ☰
ul(*ngIf="menuVisible")


But when I've tried to test this component I get weird issue: Sometimes I click the open side panel button in Google Chrome (just for example this issue does not depend on any browser), I see that side-navigation bar opens in another browser (Edge). I don't know how to fix it. Is it my problem or some kind of bug?

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