iCloud.com never finishes loading with Shield enabled

Description of the issue
With Shield enabled, icloud.com never finishes loading. You get a spinning logo in the middle of the page for some time, which is eventually replaced by a “connection error” message.

Exact URL of the website in question
https://www.icloud.com

Did the issue present with default Shields settings? [Default states are: Block: Ads/Trackers, 3rd Party Cookies, 3rd Party Fingerprinting Allow: Encrypt Connections enabled (HTTPS), Scripts] (yes/no)
Yes

Does the site function as expected when Shields are turned off? (yes/no)
Yes

Does the site function as expected when using Chrome? (yes/no)
Yes

What Operating System and Brave version/Build are you using when you encounter the issue?(See the About Brave page in the main menu)
Windows 10 Pro, 1809
Version 0.65.120 Chromium: 75.0.3770.90 (Official Build) (64-bit)

The problem appears only in the desktop version of Brave as on mobile, a limited mobile version of the page is presented. If you force “Load Desktop version” on mobile, the login page too loads correctly.

Change the cookies, allow all cookies in Sheilds.