Just a note for the next person seeing this thread: after reviewing screenshots together, we figured out that the 16px padding around the Application Under Test in Cypress 10 is the responsible for the difference in appearance, since there is a total 32px less width available when displaying the AUT. This is probably not an issue for most situations, but here the reduction in space impacted the readability of text that was real small before, so even being just a little smaller than that impacts readability.