`Cypress.on('uncaught:exception')` No Longer Preventing Tests From Failing after Upgrade to `10.0.2`

Current behavior

Cypress is not ignoring the following error:

My cypress/support/e2e.js file is configured so that Cypress should return false on an uncaught:exception in order to prevent the test from failing. This is no longer working as expected after upgrading to the latest version, 10.0.2, as the test is failing.

Desired behavior

In this situation, Cypress should pass the it statement while ignoring the error and throwing any specified logging.

Test code to reproduce

Cypress.on('uncaught:exception', (err) => {
  // returning false here prevents Cypress from
  // failing the test
  console.log('Cypress detected uncaught exception: ', err);
  return false;
});

Cypress Version

10.0.2

Other

No response

[AtofStryker]

@willoliveira-air I am going to continue our conversation on issue #22113 as I think you and @mlberkow are having the same, if not a very similar issue, i.e. a resize observer failure that is being generated from the test itself, not the application.

[AtofStryker]

@danfooks since your error comes from the application itself, the problem is likely a bit different. I noticed you are using cy.origin, in which case you likely need a separate uncaught:exception handler in cy.origin to catch that error and not throw it in your main test, something like:

const baseUrl = 'https://www.sampleUrl.com/';

function testLoginPageLink(selector, pageDetails) {
  cy.get(selector)
    .should('have.attr', 'href').and('include', `${baseUrl}${pageDetails.path}`)
    .then((href) => {
      cy.origin(baseUrl,
        { args: { hrefPath: href.substring(26), title: pageDetails.title }}, ({ hrefPath, title }) => {
          Cypress.on('uncaught:exception', () => false)
          cy.visit(hrefPath);
          cy.contains(title);
        });
    });
}