When you disable JavaScript and click the checkout button on the cart page, it goes to the checkout page, but only ever displays a spinner. No content is ever loaded, so no js users cannot checkout. I tried this on both a dev store and production store. Tried with Chrome and Firefox with the same result.
Anyone else having this issue?
I cannot recall when I last tested this (maybe past year?), but you could definitely complete the entire checkout with JavaScript disabled. Hopefully this is just a temporary bug, as the default store theme, Dawn, fully supports having JavaScript disabled. It’s odd that now the checkout requires JavaScript. There’s not even a message saying something like “Please enable JavaScript to checkout”.
FYI: I already opened up an issue on the Dawn theme github repository, but haven’t heard anything back… The devs sometimes forward stuff onto the appropriate team, so was worth a shot.