test fails to load page in headless chrome, but succeeds headed

[constantlyk]

Essentially, a very simple test generally succeeds with Chrome in the test runner or when using the --headed flag in the command line, and also succeeds with headless or headed Electron, but fails to load the page under test when in headless Chrome.

I've listed the replication steps here, as well as some notes and debug logs:
https://github.com/constantlyk/cypress-program-guide-demo

I also opened a thread in discord, which may have some more information. In particular, I've written in that thread that the original version of this test did actually use a cy.intercept() on the graphql request made by the page, and confirmed that the request is never made (cy.wait() times out); I changed the demo version of the test to check a DOM element instead, but the result is the same:
https://discord.com/channels/755913899261296641/1001162684181528676

Previous discussions which seem somewhat related, though I can't tell from the details given if they are in fact the same issue:

• How to find out why my headless test is failing to load a page inside Jenkins #18575
• A test involving modal interaction fails consistently when running in headless mode, whereas it consistently passes in headed mode #20207
• and I am starting to suspect we are dealing with x-frame-origin hijinks as well; c.f. Blank page/not fully loaded application when X-Frame-Options headers present. #3459