Agent can't select items from `select` element.

[spegoraro]

Before submitting an issue, please:

• Check the documentation for relevant information
• Search existing issues to avoid duplicates

Environment Information

Please provide the following information to help us reproduce and resolve your issue:

Stagehand:

• Language/SDK: Typescript
• Stagehand version: 3.0.1

AI Provider:

• Provider: any (tested with Gemini and Claude Sonnet latest)
• Model: any (use anthropic/claude-sonnet-4-5-20250929 for an example)

Issue Description

When asking an agent to fill in a form that contains select elements it attempts to click the box but the options never show up so the agent gets stuck in a loop of scrolling down, scrolling back up, then clicking again. This may be related to #823

Steps to Reproduce

1. Create a stagehand session
2. Navigate to a form with dropdowns
3. Prompt the agent to fill in the form
4. Observe the issue behaviour

Minimal Reproduction Code

import "dotenv/config";
import { Stagehand } from "@browserbasehq/stagehand";
import { z } from "zod/v3";

async function main() {
  const model = "<MODEL_ID>";
  const apiKey = "<MODEL_API_KEY>";
  const stagehand = new Stagehand({
    env: "BROWSERBASE",
    model,
    apiKey
  });

  await stagehand.init();
  const page = stagehand.context.pages()[0];
  const agent = stagehand.agent({
    cua: true,
    model: {
      modelName: model,
      apiKey,
    },
  });

  await page.goto(
    "https://www.ato.gov.au/single-page-applications/calculatorsandtools?anchor=STC#STC/questions"
  );
  const result = await agent.execute({
    instruction:
      "Fill in the tax estimator form assuming the previous tax year, a total taxable income of $150,000AUD and full-year tax residency. Once filled, submit the form and extract the estimated tax payable.",
    page,
    maxSteps: 30,
  });

  console.log(result);
  await stagehand.close();
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});

Error Messages / Log trace

No error, just incorrect behaviour.

Screenshots / Videos

Nil

Related Issues

Are there any related issues or PRs?

• Related to: Support dropdowns by adding selectOption to SupportedPlaywrightActions #823

[brennanmceachran]

I agree this is an issue. There are several native UI elements that I haven't been able to get to work with Stagehand, including:

• Select
• Input
• Date inputs
• Time inputs

You can somewhat get around this with specific prompting tips: https://docs.stagehand.dev/v3/best-practices/prompting-best-practices#choose-the-right-action-verbs

But it really is a major letdown.