LTI 1.1 common cartridges produces an Access denied screen on Safari + Catalina

[cagp-dev-mtl]

Description

LTI links cannot be launched successfully for Safari users on the Mac Catalina OS.

Steps to Reproduce

1. Open a working LTI 1.1 link from Pressbooks in Canvas using Chrome. See how it works.
2. Try to open to access the same LTI link in Canvas using Safari. You will see an Access denied error.

Expected behavior:
You are able to see the content of the LTI 1.1 link

Actual behavior:
Access denied error is displaying

System Information

Browserstack Safari latest version + catalina

Notes:

IT staff at UMBC report:

Recent updates to the Safari web browser are preventing access to LTI content inside any Learning Management System (LMS) including Blackboard. The issue stems from Apple trying to prevent websites from secretly tracking the browsing activity of Safari users (https://www.bleepingcomputer.com/news/security/apple-adds-better-cross-site-tracking-prevention-in-ios-122-beta-and-safari-121/). Unfortunately, these updates are preventing third-party tools from functioning properly.