Undefined snapshot on test failure

[bahmutov]

Testing Cypress v7

Reproduction in https://github.com/bahmutov/cypress-spy

The test fails, but when I hover over the failed command shows our failure

snapshot.mp4

The stack:

Relevant code:

Setting the breakpoint:

[bahmutov]

Maybe because the error happens inside cy.on callback?

cy.on('window:before:load', (win) => {
    console.log('win before load')
    Object.defineProperty(win, 'gtag', {
        // configurable: false,
        get: () => gtag,
        set: () => { },
    })
})
cy.visit('/index.html')

[bahmutov]

Using v6.8.0 - no problem

[github-actions]

Internal Jira issue: TR-762

[cypress-bot]

The code for this is done in cypress-io/cypress#16015, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 7.2.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v7.2.0, please open a new issue.