fix(pivot): Update columns when filter dimension changes

Author: dkamburov

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

@@ -20,7 +20,8 @@ export class IgxPivotFilteringService extends IgxFilteringService {
         const dim = allDimensions.find(x => x.memberName === fieldName || x.member === fieldName);
         dim.filter = undefined;
         grid.filteringPipeTrigger++;
-        if (PivotUtil.flatten(config.columns).indexOf(dim) !== -1) {
+        if (PivotUtil.flatten(config.columns).indexOf(dim) !== -1 ||
+            PivotUtil.flatten(config.filters).indexOf(dim) !== -1) {
             // update columns
             (grid as any).setupColumns();
         }
@@ -42,7 +43,8 @@ export class IgxPivotFilteringService extends IgxFilteringService {
         this.prepare_filtering_expression(filteringTree, fieldName, term, conditionOrExpressionsTree, ignoreCase, fieldFilterIndex);
         dim.filter = filteringTree;
         grid.filteringPipeTrigger++;
-        if (PivotUtil.flatten(config.columns).indexOf(dim) !== -1) {
+        if (PivotUtil.flatten(config.columns).indexOf(dim) !== -1 ||
+            PivotUtil.flatten(config.filters).indexOf(dim) !== -1) {
             // update columns
             (grid as any).setupColumns();
         }

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.component.ts

@@ -544,7 +544,7 @@ export class IgxPivotGridComponent extends IgxGridBaseDirective implements OnIni
         this.autoGenerate = true;
         this.uniqueColumnValuesStrategy = this.uniqueColumnValuesStrategy || this.uniqueDimensionValuesStrategy;
         const config = this.pivotConfiguration;
-        this.filteringExpressionsTree = PivotUtil.buildExpressionTree(config);;
+        this.filteringExpressionsTree = PivotUtil.buildExpressionTree(config);
         super.ngOnInit();
     }