Managed checkout desyncing / not updating

[willPrattUPL]

TLDR: I believe this is a cookie issue, but since this happens on managed checkout pages I can only test one half of this

google_screen_recording_2025-02-06T14-55_03.521Z.webm

We can get this extremely reliably on our current setup on our own live site just by signing out on the managed checkout space.

JWT from session-sync from video

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Steps I took to get to video state

day 1

1. sign in on headless
2. build cart
3. go to checkout
4. sign out on managed checkout side
5. build cart
6. attempt to get broken state on checkout

at this point, things were still working fine. however...

day 2

7. have existing cart items
8. go to checkout

Additional context

There appears to be multiple ways to get this "desync", but the most reliable way is to sign out on the managed checkout space.

We have also gotten it unreliably by doing very wonky user flows (sign in on headless, sign out, sign in, build cart, delete cart, sign out, sign in, build cart, close tab) suggesting that there is a race condition or something not being set correctly at some stage unrelated to the managed checkout

"Fix"

The "fix" is to clear 'SHOP_SESSION_TOKEN' in particular, which is a httponly cookie

[willPrattUPL]

This very likely is ONLY an issue on stencil, but there's a chance that there needs to be a fix on Catalyst side, so I'm posting this here

[migueloller]

Thanks for reporting the issue @willPrattUPL ❤

Just wanted to let you know that we're looking into it. We'll keep you posted