diff --git a/packages/devextreme/js/__internal/grids/pivot_grid/m_widget.ts b/packages/devextreme/js/__internal/grids/pivot_grid/m_widget.ts
index a8551242092a..e222956f6dc2 100644
--- a/packages/devextreme/js/__internal/grids/pivot_grid/m_widget.ts
+++ b/packages/devextreme/js/__internal/grids/pivot_grid/m_widget.ts
@@ -1174,7 +1174,7 @@ class PivotGrid extends Widget {
 
     that.$element().addClass(OVERFLOW_HIDDEN_CLASS);
 
-    that._createComponent(that.$element(), FieldChooserBase, {
+    const fieldChooserOptions = {
       dataSource: that.getDataSource(),
       encodeHtml: that.option('encodeHtml'),
       allowFieldDragging: that.option('fieldPanel.allowFieldDragging'),
@@ -1182,7 +1182,14 @@ class PivotGrid extends Widget {
       visible: that.option('visible'),
       // @ts-expect-error ts-error
       remoteSort: that.option('scrolling.mode') === 'virtual',
-    });
+    };
+
+    if (isFirstDrawing) {
+      that._createComponent(that.$element(), FieldChooserBase, fieldChooserOptions);
+    } else {
+      // @ts-expect-error dxPivotGridFieldChooserBase is registered as jQuery plugin
+      that.$element().dxPivotGridFieldChooserBase('instance').option(fieldChooserOptions);
+    }
 
     const dataArea = that._renderDataArea(dataAreaElement);
     const rowsArea = that._renderRowsArea(rowsAreaElement);
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/pivotGrid.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/pivotGrid.tests.js
index 47575050dd08..f036c89e9d62 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/pivotGrid.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/pivotGrid.tests.js
@@ -1044,6 +1044,43 @@ QUnit.module('dxPivotGrid', {
 
     });
 
+    QUnit.test('Reassigning dataSource keeps only one current PivotGridDataSource instance (no stale references)', function(assert) {
+        const baseOptions = {
+            store: { type: 'array', data: [] },
+            fields: [
+                { area: 'row', dataField: 'region' },
+                { area: 'column', dataField: 'date' },
+                { area: 'data', dataField: 'amount', summaryType: 'sum' }
+            ]
+        };
+
+        const dataSource1 = new PivotGridDataSource(baseOptions);
+        const dataSource2 = new PivotGridDataSource(baseOptions);
+        const dataSource3 = new PivotGridDataSource(baseOptions);
+
+        const pivotGrid = createPivotGrid({ dataSource: dataSource1 });
+        this.clock.tick(10);
+
+        assert.strictEqual(pivotGrid.getDataSource(), dataSource1, 'initial dataSource is dataSource1');
+        assert.strictEqual(pivotGrid.$element().dxPivotGridFieldChooserBase('instance').option('dataSource'), dataSource1, 'FieldChooserBase uses dataSource1');
+
+        const initialOptionChangedListLength = pivotGrid._eventsStrategy._events.optionChanged._list.length;
+
+        pivotGrid.option('dataSource', dataSource2);
+        this.clock.tick(10);
+
+        assert.strictEqual(pivotGrid.getDataSource(), dataSource2, 'current dataSource is dataSource2 after first reassignment');
+        assert.strictEqual(pivotGrid.$element().dxPivotGridFieldChooserBase('instance').option('dataSource'), dataSource2, 'FieldChooserBase uses dataSource2');
+        assert.strictEqual(pivotGrid._eventsStrategy._events.optionChanged._list.length, initialOptionChangedListLength, 'optionChanged listener count does not grow after first reassignment');
+
+        pivotGrid.option('dataSource', dataSource3);
+        this.clock.tick(10);
+
+        assert.strictEqual(pivotGrid.getDataSource(), dataSource3, 'current dataSource is dataSource3 after second reassignment');
+        assert.strictEqual(pivotGrid.$element().dxPivotGridFieldChooserBase('instance').option('dataSource'), dataSource3, 'FieldChooserBase uses current dataSource (no stale reference to dataSource1 or dataSource2)');
+        assert.strictEqual(pivotGrid._eventsStrategy._events.optionChanged._list.length, initialOptionChangedListLength, 'optionChanged listener count does not grow after multiple reassignments');
+    });
+
     QUnit.test('not show field chooser popup on description area click when fieldChooser disabled', function(assert) {
         createPivotGrid({
             fieldChooser: {