diff --git a/src/internal/utils/node-belongs.ts b/src/internal/utils/node-belongs.ts
index bdbc944c1c..a45c731819 100644
--- a/src/internal/utils/node-belongs.ts
+++ b/src/internal/utils/node-belongs.ts
@@ -15,7 +15,10 @@ export function nodeBelongs(container: Node | null, target: Node | EventTarget |
   if (!(target instanceof Node)) {
     return false;
   }
-  const portal = findUpUntil(target as HTMLElement, node => !!node.dataset.awsuiReferrerId);
+  const portal = findUpUntil(
+    target as HTMLElement,
+    node => node instanceof HTMLElement && !!node.dataset.awsuiReferrerId
+  );
   const referrer = portal instanceof HTMLElement ? document.getElementById(portal.dataset.awsuiReferrerId ?? '') : null;
   return referrer ? nodeContains(container, referrer) : nodeContains(container, target);
 }
diff --git a/src/mixed-line-bar-chart/__tests__/mixed-chart.test.tsx b/src/mixed-line-bar-chart/__tests__/mixed-chart.test.tsx
index 555dbb94de..bfb3474fe7 100644
--- a/src/mixed-line-bar-chart/__tests__/mixed-chart.test.tsx
+++ b/src/mixed-line-bar-chart/__tests__/mixed-chart.test.tsx
@@ -772,7 +772,7 @@ describe('Filter', () => {
 
   describe('Dropdown', () => {
     const openDropdown = (wrapper: MixedLineBarChartWrapper) => {
-      wrapper.findDefaultFilter()?.openDropdown();
+      wrapper.findDefaultFilter()!.openDropdown();
       return wrapper.findDefaultFilter()!.findDropdown()!;
     };
 
@@ -804,6 +804,17 @@ describe('Filter', () => {
       expect(dropdownWrapper.findSelectedOptions()).toHaveLength(1);
       expect(dropdownWrapper.findSelectedOptions()[0].getElement()).toHaveTextContent(defaultData[1].title);
     });
+
+    test('allows filtering segments', () => {
+      const { wrapper } = renderMixedChart(<MixedLineBarChart series={defaultData} />);
+
+      expect(wrapper.findSeries()).toHaveLength(2);
+
+      wrapper.findDefaultFilter()!.openDropdown();
+      wrapper.findDefaultFilter()!.selectOption(1);
+      wrapper.findDefaultFilter()!.closeDropdown();
+      expect(wrapper.findSeries()).toHaveLength(1);
+    });
   });
 });