Merge pull request #5740 from IgniteUI/astaev/issue5652-8.1.x

test(esf): Trying to fix flickering test #5652

Author: DiyanDimitrov

projects/igniteui-angular/src/lib/grids/grid/grid-filtering-ui.spec.ts

@@ -5022,8 +5022,8 @@ describe('IgxGrid - Filtering actions - Excel style filtering', () => {
 
             // Click 'sort asc' button in ESF.
             GridFunctions.clickExcelFilterIcon(fix, 'Downloads');
-            await wait(100);
             fix.detectChanges();
+            await wait(400);
             GridFunctions.clickSortAscInExcelStyleFiltering(fix);
             await wait(100);
             fix.detectChanges();
@@ -5060,8 +5060,8 @@ describe('IgxGrid - Filtering actions - Excel style filtering', () => {
 
             // Click 'sort desc' button in ESF.
             GridFunctions.clickExcelFilterIcon(fix, 'Downloads');
-            await wait(100);
             fix.detectChanges();
+            await wait(400);
             GridFunctions.clickSortDescInExcelStyleFiltering(fix);
             await wait(100);
             fix.detectChanges();
@@ -5098,11 +5098,11 @@ describe('IgxGrid - Filtering actions - Excel style filtering', () => {
 
             // Click 'sort desc' button in ESF.
             GridFunctions.clickExcelFilterIcon(fix, 'Downloads');
-            await wait(100);
             fix.detectChanges();
+            await wait(400);
             GridFunctions.clickSortDescInExcelStyleFiltering(fix);
-            await wait(100);
             fix.detectChanges();
+            await wait(100);
 
             // Verify data is sorted in descending order.
             cells = GridFunctions.sortNativeElementsVertically(