In a previous changelog entry, we warned you about changes to Chrome’s handling of cookies via the new SameSite attribute, which affects the behavior of cookies in iframes, and thus affects the loading of BigCommerce apps.

Google has announced that they have temporarily rolled back this change to Chrome:

https://blog.chromium.org/2020/04/temporarily-rolling-back-samesite.html

Therefore, if any BigCommerce apps were failing to load in Chrome due to SameSite cookie issues, they should be working again.

However, BigCommerce still recommends updating your apps to set session cookies use SameSite=None; Secure so they will work when this rollout resumes in the future.

If you wish to test that your app works properly in either case, you can force on these Chrome feature flags under chrome://flags:
SameSite by default cookies
Cookies without SameSite must be secure