Technology

Bug report: Unintended infinite reloading occurs when visiting Tesla Japan's web page with English settings

I found a bug on Tesla Japan's website.

How to reproduce:

Choose the United States English from the language setting menu in https://tesla.com.

choose_english

Visit, for example, https://www.tesla.com/jp/blog/mission-tesla.
The browser reloads the page infinitely.

tesla-japan-reload

When you select your language, ip_lookup_desired_locale cookie gets set to en_us.

locale_developer_tools

When visiting https://www.tesla.com/jp/blog/mission-tesla, the following javascript file is loaded https://www.tesla.com/modules/custom/tesla_mega_menu/dist/1.0.0/header.bundle.js?qvya2d.
Method rerouteToSavedLocale() in the JavaScript file is calling window.location.assign() with exactly the same path as the current page, i.e. //www.tesla.com/jp/blog/mission-tesla, which is causing the infinite reload.

rerouteToSavedLocale

I hope this issue will be resolved soon and everybody can enjoy the contents of Tesla’s website.

This bug appears in all of the following pages and their descendants (e.g., https://www.tesla.com/jp/blog/mission-tesla).

I believe that this bug happens regardless of users' environment. However, I have tested and confirmed the bug in the following environments:

MacBook Pro, macOS 10.15.7, Google Chrome 91.0.4472.114 (Official Build) (x86_64)
iPhone 12, iOS 14.6, Safari 14.1.1