Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

WebdriverIO Version

9.2.11

Node.js Version

20.16.0

Mode

WDIO Testrunner

Which capabilities are you using?

{
    "wdio:enforceWebDriverClassic": true
}

What happened?

An error is thrown when attempting to switch to a parent frame using webdriver classic.

What is your expected behavior?

The context should be switched to the parent frame.

How to reproduce the bug.

browser.switchFrame(null);

Relevant log output

TypeError: Cannot read properties of null (reading 'getElement')
at isPossiblyUnresolvedElement (.../node_modules/webdriverio/build/index.js:4190:54)
at Browser.switchFrame (.../node_modules/webdriverio/build/index.js:4199:9)
at Browser.wrapCommandFn (.../node_modules/@wdio/utils/build/index.js:884:32)

Code of Conduct

• I agree to follow this project's Code of Conduct

Is there an existing issue for this?

• I have searched the existing issues