Merge branch '10.2.x' into hanastasov/handle-dates-m

Author: kdinev

projects/igniteui-angular/src/lib/grids/filtering/excel-style/excel-style-search.component.ts

@@ -127,7 +127,7 @@ export class IgxExcelStyleSearchComponent implements AfterViewInit, OnDestroy {
      * @hidden @internal
      */
     public get valuesLoadingTemplate() {
-        if (this.esf.grid.excelStyleLoadingValuesTemplateDirective) {
+        if (this.esf.grid?.excelStyleLoadingValuesTemplateDirective) {
             return this.esf.grid.excelStyleLoadingValuesTemplateDirective.template;
         } else {
             return this.defaultExcelStyleLoadingValuesTemplate;
@@ -136,6 +136,7 @@ export class IgxExcelStyleSearchComponent implements AfterViewInit, OnDestroy {
 
     constructor(public cdr: ChangeDetectorRef, public esf: IgxGridExcelStyleFilteringComponent) {
         esf.loadingStart.pipe(takeUntil(this.destroy$)).subscribe(() => {
+            this.displayedListData = [];
             this.isLoading = true;
         });
         esf.loadingEnd.pipe(takeUntil(this.destroy$)).subscribe(() => {