Unable to get contract info on testnet (CORS error for 301 redirect)

Bug Type

Functional

Reproduction steps

1. Open any address in testnet
2. Switch to "Contract" tab

Actual result

Information is failed to load.

CORS error is displayed in Developer Console.

Expected result

Contract data/source must be shown.

Suggested Severity

Medium

Device

Desktop: Windows 10: Chrome v114.0.5735.199 (latest), Firefox v115.0 (latest)

Additional Context

Below are request/response dumps.

I think browsers expect CORS headers to be present in 301 redirects too.