icloud.com never loads with default shield settings

Description

https://www.icloud.com/ never finishes loading with the default shield settings, as shown below:

The site loads correctly with the cookie setting changed to All cookies allowed.

Steps to Reproduce

1. Start with a fresh profile or reset all content settings.
2. Go to https://www.icloud.com/

Actual result:

The login page never loads. The following error message appears after a while:

Here is the developer console output (with a few errors):

Expected result:

The site should load the login page, like this:

Reproduces how often:

Always

Brave version (brave://version info)

Brave | 0.60.3 Chromium: 71.0.3578.98 (Official Build) dev(64-bit) Revision | 15234034d19b85dcd9a03b164ae89d04145d8368-refs/branch-heads/3578@{#897} OS | Mac OS X

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? Yes, 0.60.3 dev.

Website problems only:

• Does the issue resolve itself when disabling Brave Shields? Yes.
• Is the issue reproducible on the latest version of Chrome? Not sure.

Additional Information

#1025 mentions a problem with icloud.com with fingerprinting protection. This issue pertains to the cookie setting.

[diracdeltas]

Since this is not part of the regular release cycle (it’s a file which is updated independently), any thoughts what milestone this should be marked as, @rebron ?

[rebron]

@diracdeltas Adding to what was current release at the time which was 65.x hotfix 2.