Redirect to subdomain has incorrect cookie value.

Current behavior

When redirecting from web server (dev.mydomain.com) to api server (api-dev.mydomain.com) and setting baseUrl in the run command then the cookies for the redirect have the incorrect subdomain and thus get stripped from the request to the api server.

Desired behavior

Don’t touch my cookies.

Test code to reproduce

baseUrl is set to dev.mydomain.com

	cy.getCookie('mycookie').then(c => {
		const mycookie = c.value;
		cy.log(mycookie);
		cy.setCookie('mycookie', mycookie, { domain: '.mydomain.com' }).then(() => {
			cy.getCookie('mycookie').then(cookie => {
				expect(cookie.domain).to.eq('.mydomain.com');
                              // at this point the code fails because the domain is 'dev.mydomain.com'
			});
		});
	});

Versions

Worked in 5.x. Doesn’t in 6.x

[jwagon]

Another update is that yesterday we downgraded Cypress to v5.6, and things work as expected, even with baseUrl set. Hope the additional context is helpful . . .

[jwagon]

@Qarj I’d add to @jkyoutsey 's last sentence, that “against localhost” means that we are running our front-end app on localhost and Cypress is running its test against that app; and that app is configured to proxy API requests to dev.* or api-dev.* as appropriate. So the server end of this equation seems to be working as it should. It’s only when we point Cypress at the front-end app deployed to dev.* through the baseUrl parameter that things break down.