diff --git a/packages/react/src/select/trigger/SelectTrigger.test.tsx b/packages/react/src/select/trigger/SelectTrigger.test.tsx
index 5dd8283a515..cd58c74953b 100644
--- a/packages/react/src/select/trigger/SelectTrigger.test.tsx
+++ b/packages/react/src/select/trigger/SelectTrigger.test.tsx
@@ -102,13 +102,19 @@ describe('<Select.Trigger />', () => {
   });
 
   describe('releasing the opening press', () => {
-    async function pressTrigger(container?: ShadowRoot) {
+    async function pressTrigger(
+      options: {
+        container?: ShadowRoot;
+        onOpenChange?: Select.Root.Props<string>['onOpenChange'];
+        release?: boolean;
+      } = {},
+    ) {
       await render(
-        <Select.Root>
+        <Select.Root onOpenChange={options.onOpenChange}>
           <Select.Trigger data-testid="trigger">
             <Select.Value />
           </Select.Trigger>
-          <Select.Portal container={container}>
+          <Select.Portal container={options.container}>
             <Select.Positioner alignItemWithTrigger={false}>
               <Select.Popup>
                 <Select.Item value="a">a</Select.Item>
@@ -124,15 +130,33 @@ describe('<Select.Trigger />', () => {
 
       fireEvent.pointerDown(trigger, { pointerType: 'mouse', button: 0 });
       fireEvent.mouseDown(trigger, { button: 0 });
+      if (options.release) {
+        fireEvent.mouseUp(trigger, { button: 0, clientX: 150, clientY: 120 });
+      }
       await waitFor(() => {
         expect(trigger).toHaveAttribute('aria-expanded', 'true');
       });
-      // The press is held long enough for the trigger to start watching its release.
+      return trigger;
+    }
+
+    it('ignores a later release when the opening press was released immediately', async () => {
+      const onOpenChange = vi.fn();
+      const trigger = await pressTrigger({ onOpenChange, release: true });
       await act(async () => {
         await wait(20);
       });
-      return trigger;
-    }
+      onOpenChange.mockClear();
+      expect(trigger).toHaveAttribute('aria-expanded', 'true');
+
+      // e.g. a press that started inside the popup and was dragged off it
+      fireEvent.mouseUp(document.body, { button: 0, clientX: 10, clientY: 10 });
+      await act(async () => {
+        await wait(20);
+      });
+
+      expect(trigger).toHaveAttribute('aria-expanded', 'true');
+      expect(onOpenChange).not.toHaveBeenCalled();
+    });
 
     it('keeps the popup open when the press slips up to 5px off the trigger', async () => {
       const trigger = await pressTrigger();
@@ -161,7 +185,7 @@ describe('<Select.Trigger />', () => {
       const shadowRoot = host.attachShadow({ mode: 'open' });
 
       try {
-        const trigger = await pressTrigger(shadowRoot);
+        const trigger = await pressTrigger({ container: shadowRoot });
         const popup = shadowRoot.querySelector('[role="listbox"]');
         expect(popup).not.toBe(null);
 
diff --git a/packages/react/src/select/trigger/SelectTrigger.tsx b/packages/react/src/select/trigger/SelectTrigger.tsx
index 7a290c95eaf..59e9d7f8280 100644
--- a/packages/react/src/select/trigger/SelectTrigger.tsx
+++ b/packages/react/src/select/trigger/SelectTrigger.tsx
@@ -99,7 +99,6 @@ export const SelectTrigger = React.forwardRef(function SelectTrigger(
   const setTriggerElement = store.useStateSetter('triggerElement');
 
   const timeoutFocus = useTimeout();
-  const timeoutMouseDown = useTimeout();
   const selectedDelayTimeout = useTimeout();
 
   React.useEffect(() => {
@@ -124,10 +123,8 @@ export const SelectTrigger = React.forwardRef(function SelectTrigger(
       dragY: 0,
     };
 
-    timeoutMouseDown.clear();
-
     return undefined;
-  }, [open, store, timeoutMouseDown, selectedDelayTimeout]);
+  }, [open, store, selectedDelayTimeout]);
 
   const mergedProps: HTMLProps = mergeProps<'button'>(
     triggerProps,
@@ -201,10 +198,7 @@ export const SelectTrigger = React.forwardRef(function SelectTrigger(
           store.setOpen(false, createChangeEventDetails(REASONS.cancelOpen, mouseEvent));
         }
 
-        // Firefox can fire this upon mousedown
-        timeoutMouseDown.start(0, () => {
-          doc.addEventListener('mouseup', handleMouseUp, { once: true });
-        });
+        doc.addEventListener('mouseup', handleMouseUp, { once: true });
       },
     },
     elementProps,