The new browser automation tool (cursor-ide-browser) fails to properly fill and submit login forms. When attempting to log into a web application, form fields show validation errors even after being filled with valid credentials, and form submission doesn’t work correctly.
Steps to Reproduce
Use the browser automation tool to navigate to any page with a form
Use browser_type to fill form input fields with valid values
Use browser_click to submit the form (click submit button or press Enter)
Observe that form fields show invalid states despite having values
Form submission fails or doesn’t proceed
Form fields show states: [“invalid”] even when values are present
Validation error messages appear despite fields being filled
Form submission doesn’t work - page doesn’t progress
Button clicks don’t trigger form submission
The form remains in an invalid state preventing submission
Expected Behavior
Form fields should accept typed values without showing invalid states
Form validation should recognize entered values
Form submission should work when valid data is entered
The form should process and submit successfully
Operating System
MacOS
Current Cursor Version (Menu → About Cursor → Copy)
For AI issues: add Request ID with privacy disabled
7c19fa1b-ec2e-463d-967c-c73adada3449
Additional Information
This affects any form interaction (login, registration, contact forms, etc.)
The tool provides detailed snapshots showing element states, which helps identify the issue
The problem appears to be related to how form field values are being set or recognized by the browser automation
Previous browser automation tool worked correctly with the same forms
Hey, thanks for the report. This looks like a known issue with JavaScript framework apps (React, Vue, etc.).
Quick question: is this a React app or another framework? The problem you’re describing (fields being treated as invalid even when they have values) is typical when automation tools set values directly without triggering framework events like onChange.
This happens only while using the browser tab, but works fine when I use the “Google Chrome“ option for browser automation.
Console Errors from Cursor IDE Logs:
SyntaxError: Unexpected token '#', "
### Page s"... is not valid JSON
at JSON.parse (<anonymous>)
at Object.fn (workbench.desktop.main.js:7060:6284)
at u4a (workbench.desktop.main.js:276:30076)
at Sst (workbench.desktop.main.js:276:29830)
...
at Up.updateComposerDataSetStore (workbench.desktop.main.js:565:14723)
at Up.updateComposerBubbleSetStore (workbench.desktop.main.js:565:25104)
at Eso.setBubbleData (workbench.desktop.main.js:7078:154)
at Eso.handleToolResult (workbench.desktop.main.js:7078:14047)
[transport] Stream error reported from extension host ConnectError: [canceled] This operation was aborted
at kZc.$endAiConnectTransportReportError (workbench.desktop.main.js:6330:408452)
{arch: 'arm64', platform: 'darwin', channel: 'stable', client_version: '2.1.26', streamId: 'd192812b-40f7-429f-aa24-fe9c95274736', …}
[composer] Failed to get complete AI response
[composer] Chat incomplete or aborted {arch: 'arm64', platform: 'darwin', channel: 'stable', client_version: '2.1.26', requestId: '57728f6d-34a3-43c1-8bc8-b83fb2de2b85', …}