diff --git a/ui/src/Components/Grid/AlertGrid/Grid.tsx b/ui/src/Components/Grid/AlertGrid/Grid.tsx
index 3825f4143..8a7dd477e 100644
--- a/ui/src/Components/Grid/AlertGrid/Grid.tsx
+++ b/ui/src/Components/Grid/AlertGrid/Grid.tsx
@@ -109,8 +109,15 @@ const Grid: FC<{
     repack();
   });
 
+  const [isMenuOpen, setIsMenuOpen] = useState<boolean>(false);
+
   return (
-    <>
+    <div
+      style={{
+        position: isMenuOpen ? "relative" : undefined,
+        zIndex: isMenuOpen ? 102 : undefined,
+      }}
+    >
       <CSSTransition
         key={grid.labelValue}
         in={grid.labelName !== ""}
@@ -126,6 +133,8 @@ const Grid: FC<{
           isExpanded={isExpanded}
           onToggle={onCollapseClick}
           paddingTop={paddingTop}
+          onMenuOpen={() => setIsMenuOpen(true)}
+          onMenuClose={() => setIsMenuOpen(false)}
         />
       </CSSTransition>
       <div
@@ -198,7 +207,7 @@ const Grid: FC<{
           </CSSTransition>
         )}
       </TransitionGroup>
-    </>
+    </div>
   );
 };
 
diff --git a/ui/src/Components/Grid/AlertGrid/GridLabelSelect.test.tsx b/ui/src/Components/Grid/AlertGrid/GridLabelSelect.test.tsx
index ee2f905ed..7b487c650 100644
--- a/ui/src/Components/Grid/AlertGrid/GridLabelSelect.test.tsx
+++ b/ui/src/Components/Grid/AlertGrid/GridLabelSelect.test.tsx
@@ -5,15 +5,25 @@ import { mount } from "enzyme";
 import fetchMock from "fetch-mock";
 
 import { MockGrid } from "__fixtures__/Stories";
+import { MockThemeContextWithoutAnimations } from "__fixtures__/Theme";
+import { mockMatchMedia } from "__fixtures__/matchMedia";
 import { AlertStore } from "Stores/AlertStore";
 import { Settings } from "Stores/Settings";
+import { SilenceFormStore } from "Stores/SilenceFormStore";
 import type { APIGridT } from "Models/APITypes";
+import { ThemeContext } from "Components/Theme";
+import AlertGrid from ".";
 import { GridLabelSelect } from "./GridLabelSelect";
 
 let alertStore: AlertStore;
 let settingsStore: Settings;
+let silenceFormStore: SilenceFormStore;
 let grid: APIGridT;
 
+declare let global: any;
+declare let document: any;
+declare let window: any;
+
 beforeEach(() => {
   fetchMock.reset();
   fetchMock.mock("*", {
@@ -22,6 +32,7 @@ beforeEach(() => {
 
   alertStore = new AlertStore([]);
   settingsStore = new Settings(null);
+  silenceFormStore = new SilenceFormStore();
   grid = {
     labelName: "foo",
     labelValue: "bar",
@@ -35,6 +46,15 @@ beforeEach(() => {
   };
   alertStore.data.setLabelNames(["alertname", "job", "cluster"]);
 
+  window.matchMedia = mockMatchMedia({});
+  global.ResizeObserver = jest.fn((cb) => {
+    return {
+      observe: jest.fn(),
+      disconnect: jest.fn(),
+    };
+  });
+  global.ResizeObserverEntry = jest.fn();
+
   jest.useFakeTimers();
 });
 
@@ -44,6 +64,8 @@ const MountedGridLabelSelect = () => {
       alertStore={alertStore}
       settingsStore={settingsStore}
       grid={grid}
+      onMenuOpen={jest.fn()}
+      onMenuClose={jest.fn()}
     />
   );
 };
@@ -126,4 +148,46 @@ describe("<GridLabelSelect />", () => {
     expect(tree.find("div.components-grid-label-select-menu")).toHaveLength(0);
     await act(() => promise);
   });
+
+  it("opening label select sets z-index", async () => {
+    const promise = Promise.resolve();
+    alertStore.data.setGrids([
+      {
+        labelName: "foo",
+        labelValue: "bar",
+        alertGroups: [],
+        totalGroups: 0,
+        stateCount: {
+          unprocessed: 1,
+          suppressed: 2,
+          active: 3,
+        },
+      },
+    ]);
+    const tree = mount(
+      <AlertGrid
+        alertStore={alertStore}
+        settingsStore={settingsStore}
+        silenceFormStore={silenceFormStore}
+      />,
+      {
+        wrappingComponent: ThemeContext.Provider,
+        wrappingComponentProps: { value: MockThemeContextWithoutAnimations },
+      }
+    );
+
+    tree.find("span.components-grid-label-select-dropdown").simulate("click");
+    expect(tree.find("div.components-grid-label-select-menu")).toHaveLength(1);
+    expect(tree.find("div").at(1).props().style?.zIndex).toBe(102);
+
+    tree.find("span.components-grid-label-select-dropdown").simulate("click");
+    act(() => {
+      jest.runOnlyPendingTimers();
+    });
+    tree.update();
+    expect(tree.find("div.components-grid-label-select-menu")).toHaveLength(0);
+    expect(tree.find("div").at(1).props().style?.zIndex).toBeUndefined();
+
+    await act(() => promise);
+  });
 });
diff --git a/ui/src/Components/Grid/AlertGrid/GridLabelSelect.tsx b/ui/src/Components/Grid/AlertGrid/GridLabelSelect.tsx
index f93b0eb87..8d4f74ac0 100644
--- a/ui/src/Components/Grid/AlertGrid/GridLabelSelect.tsx
+++ b/ui/src/Components/Grid/AlertGrid/GridLabelSelect.tsx
@@ -131,47 +131,57 @@ const GridLabelSelect: FC<{
   alertStore: AlertStore;
   settingsStore: Settings;
   grid: APIGridT;
-}> = observer(({ alertStore, settingsStore, grid }) => {
-  const [isVisible, setIsVisible] = useState<boolean>(false);
-  const hide = useCallback(() => setIsVisible(false), []);
-  const toggle = useCallback(() => setIsVisible(!isVisible), [isVisible]);
+  onMenuOpen: () => void;
+  onMenuClose: () => void;
+}> = observer(
+  ({ alertStore, settingsStore, grid, onMenuOpen, onMenuClose }) => {
+    const [isVisible, setIsVisible] = useState<boolean>(false);
+    const hide = useCallback(() => setIsVisible(false), []);
+    const toggle = useCallback(() => {
+      if (isVisible) {
+        onMenuClose();
+      } else {
+        onMenuOpen();
+      }
+      setIsVisible(!isVisible);
+    }, [isVisible, onMenuOpen, onMenuClose]);
+    const ref = useRef<HTMLDivElement | null>(null);
+    useOnClickOutside(ref, hide, isVisible);
 
-  const ref = useRef<HTMLDivElement | null>(null);
-  useOnClickOutside(ref, hide, isVisible);
-
-  return (
-    <div ref={ref} className="components-label badge ps-1 pe-2">
-      <Manager>
-        <Reference>
-          {({ ref }) => (
-            <span
-              ref={ref}
-              onClick={toggle}
-              className="border-0 rounded-0 bg-inherit cursor-pointer px-1 py-0 components-grid-label-select-dropdown"
-              data-toggle="dropdown"
-            >
-              <FontAwesomeIcon className="text-muted" icon={faCaretDown} />
-            </span>
-          )}
-        </Reference>
-        <DropdownSlide in={isVisible} unmountOnExit>
-          <Popper modifiers={CommonPopperModifiers}>
-            {({ placement, ref, style }) => (
-              <Dropdown
-                popperPlacement={placement}
-                popperRef={ref}
-                popperStyle={style}
-                alertStore={alertStore}
-                settingsStore={settingsStore}
-                grid={grid}
-                onClose={toggle}
-              />
+    return (
+      <div ref={ref} className="components-label badge ps-1 pe-2">
+        <Manager>
+          <Reference>
+            {({ ref }) => (
+              <span
+                ref={ref}
+                onClick={toggle}
+                className="border-0 rounded-0 bg-inherit cursor-pointer px-1 py-0 components-grid-label-select-dropdown"
+                data-toggle="dropdown"
+              >
+                <FontAwesomeIcon className="text-muted" icon={faCaretDown} />
+              </span>
             )}
-          </Popper>
-        </DropdownSlide>
-      </Manager>
-    </div>
-  );
-});
+          </Reference>
+          <DropdownSlide in={isVisible} unmountOnExit>
+            <Popper modifiers={CommonPopperModifiers}>
+              {({ placement, ref, style }) => (
+                <Dropdown
+                  popperPlacement={placement}
+                  popperRef={ref}
+                  popperStyle={style}
+                  alertStore={alertStore}
+                  settingsStore={settingsStore}
+                  grid={grid}
+                  onClose={toggle}
+                />
+              )}
+            </Popper>
+          </DropdownSlide>
+        </Manager>
+      </div>
+    );
+  }
+);
 
 export { GridLabelSelect };
diff --git a/ui/src/Components/Grid/AlertGrid/Swimlane.tsx b/ui/src/Components/Grid/AlertGrid/Swimlane.tsx
index a53681cf1..48eb58667 100644
--- a/ui/src/Components/Grid/AlertGrid/Swimlane.tsx
+++ b/ui/src/Components/Grid/AlertGrid/Swimlane.tsx
@@ -19,6 +19,8 @@ const Swimlane: FC<{
   isExpanded: boolean;
   onToggle: (event: MouseEvent) => void;
   paddingTop: number;
+  onMenuOpen: () => void;
+  onMenuClose: () => void;
 }> = ({
   alertStore,
   settingsStore,
@@ -26,6 +28,8 @@ const Swimlane: FC<{
   isExpanded,
   onToggle,
   paddingTop,
+  onMenuOpen,
+  onMenuClose,
 }) => {
   return (
     <h5
@@ -59,6 +63,8 @@ const Swimlane: FC<{
             alertStore={alertStore}
             settingsStore={settingsStore}
             grid={grid}
+            onMenuOpen={onMenuOpen}
+            onMenuClose={onMenuClose}
           />
         </span>
       )}
diff --git a/ui/src/Components/Grid/AlertGrid/index.tsx b/ui/src/Components/Grid/AlertGrid/index.tsx
index 1cbe90332..da5e7967a 100644
--- a/ui/src/Components/Grid/AlertGrid/index.tsx
+++ b/ui/src/Components/Grid/AlertGrid/index.tsx
@@ -77,18 +77,17 @@ const AlertGrid: FC<{
         }}
       />
       {alertStore.data.grids.map((grid) => (
-        <div key={`${grid.labelName}/${grid.labelValue}`}>
-          <Grid
-            alertStore={alertStore}
-            silenceFormStore={silenceFormStore}
-            settingsStore={settingsStore}
-            gridSizesConfig={gridSizesConfig}
-            groupWidth={groupWidth}
-            grid={grid}
-            outerPadding={alertStore.data.gridPadding}
-            paddingTop={paddingTop}
-          />
-        </div>
+        <Grid
+          key={`${grid.labelName}/${grid.labelValue}`}
+          alertStore={alertStore}
+          silenceFormStore={silenceFormStore}
+          settingsStore={settingsStore}
+          gridSizesConfig={gridSizesConfig}
+          groupWidth={groupWidth}
+          grid={grid}
+          outerPadding={alertStore.data.gridPadding}
+          paddingTop={paddingTop}
+        />
       ))}
     </>
   );