Udacity website issuing "Connection Failed" popups.

[ryanbr]

Description

Udacity is generating a window popup "Connection Failed". Cookies need to be allowed (as per: #6402). But regardless of the Sheild settings On or Off (and disabling all options), Udacity would still generate a connection failed window message.

Steps to Reproduce

1. Tested with a username/password on https://www.udacity.com/ (Intro to Machine learning) course was used for testing)
2. (in a Jupyter course section)

Actual result:

Brave with sheilds down:

Brave with sheilds down 2:

Brave Console:

Expected result:

Chrome:

Chrome Console:

Reproduces how often:

Requires to purchase a course, but was reproducible easily. There was no getting around the error message.

Brave version (brave://version info)

Version 1.1.23 Chromium: 79.0.3945.88 (Official Build) (64-bit)

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? Yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? No
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome? No

Miscellaneous Information:

Tried a few referrer whitelists on "https://*.udacity-student-workspaces.com/*", "https://*.udacity.com/*" which made no difference.
User Agent changes didn't affect it either.

From the Brave console (from the screenshot above);

i @ jquery.min.js:2
nrWrapper @ custom.js?v=20191231190313:1
kernel.js:103 Kernel: kernel_disconnected (995f6176-ef49-4d39-bf6d-b4e0d51d59fc)
kernel.js:544 WebSocket connection failed:  wss://viewad57d566.udacity-student-workspaces.com/api/kernels/995f6176-ef49-4d39-bf6d-b4e0d51d59fc true
kernel.js:562 Connection lost, reconnecting in 4 seconds.
kernel.js:103 Kernel: kernel_reconnecting (995f6176-ef49-4d39-bf6d-b4e0d51d59fc)
kernel.js:459 Starting WebSockets: wss://viewad57d566.udacity-student-workspaces.com/api/kernels/995f6176-ef49-4d39-bf6d-b4e0d51d59fc
kernel.js:461 WebSocket connection to 'wss://viewad57d566.udacity-student-workspaces.com/api/kernels/995f6176-ef49-4d39-bf6d-b4e0d51d59fc/channels?session_id=43a7cd94d9f94b658c8605d1a75d2942' failed: HTTP Authentication failed; no valid credentials available
Kernel.start_channels @ kernel.js:461
Kernel.reconnect @ kernel.js:355

[ryanbr]

as reference; was discussed on twitter: https://twitter.com/buggydebugger/status/1212089013365956608

[ryanbr]

Enabling all cookies sheilds on the site by itself wasn't enough, changing this in options/Sheilds to allow all cookies globally did fix this. This isn't ideal, but atleast we know its a cookies issue, and probably related to more than one Udacity domain.