Merge pull request #6117 from IgniteUI/SKrastev/fix-6061-master

Fix igxForOf updating heightCache before the views are being updated.

Author: zdrawku

projects/igniteui-angular/src/lib/directives/for-of/for_of.directive.ts

@@ -746,6 +746,7 @@ export class IgxForOfDirective<T> implements OnInit, OnChanges, DoCheck, OnDestr
         const diffs = [];
         let totalDiff = 0;
         const l = this._embeddedViews.length;
+        this._embeddedViews.filter(view => !view.destroyed).forEach(view => view.detectChanges());
         const rNodes = this._embeddedViews.map(view =>
             view.rootNodes.find(node => node.nodeType === Node.ELEMENT_NODE) || view.rootNodes[0].nextElementSibling);
         for (let i = 0; i < l; i++) {