adjustments for edge 18 workarounds

src/popup/tabs.component.ts

@@ -1,7 +1,20 @@
-import { Component } from '@angular/core';
+import {
+    Component,
+    OnInit,
+} from '@angular/core';
+
+import { PopupUtilsService } from './services/popup-utils.service';
 
 @Component({
     selector: 'app-tabs',
     templateUrl: 'tabs.component.html',
 })
-export class TabsComponent { }
+export class TabsComponent implements OnInit {
+    showCurrentTab: boolean = true;
+
+    constructor(private popupUtilsService: PopupUtilsService) { }
+
+    ngOnInit() {
+        this.showCurrentTab = !this.popupUtilsService.inPopout(window);
+    }
+}