chore(*): minor refactoring #6520

Author: onlyexeption

projects/igniteui-angular/src/lib/grids/columns/column.component.ts

@@ -251,8 +251,8 @@ export class IgxColumnComponent implements AfterContentInit {
                 this.grid.endEdit(false);
                 this.grid.summaryService.resetSummaryHeight();
                 this.grid.filteringService.refreshExpressions();
+                this.grid.filteringService.hideFilteringRowOnColumnVisibilityChange(this);
                 this.grid.notifyChanges();
-                this.grid.filteringService.hideColumnFilteringRowOnVisibilityChange(this);
             }
         }
     }

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

@@ -122,10 +122,10 @@ export class IgxFilteringService implements OnDestroy {
     /**
      * Close filtering row if a column is hidden.
      */
-    public hideColumnFilteringRowOnVisibilityChange(col: IgxColumnComponent) {
-        const filteringRow = col.grid.filteringRow;
+    public hideFilteringRowOnColumnVisibilityChange(col: IgxColumnComponent) {
+        const filteringRow = this.grid.filteringRow;
 
-        if (filteringRow && filteringRow.column) {
+        if (filteringRow && filteringRow.column && filteringRow.column === col) {
             filteringRow.close();
         }
     }

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

@@ -2148,6 +2148,7 @@ describe('IgxGrid - Filtering Row UI actions #grid', () => {
             // Check that the filterRow is closed
             filterUIRow = fix.debugElement.query(By.css(FILTER_UI_ROW));
             expect(filterUIRow).toBeNull();
+            expect(grid.rowList.length).toBe(3, 'filter is not applied');
         }));
 
         it('Should keep existing column filter after hiding another column.', fakeAsync(() => {