Prime Video only plays on private window or another profile


Description of the issue:
Prime Video only plays videos if I’m using a private window or another profile on Brave. I tried disabling extensions and Brave Shield; allowing every cookie on Brave Shield; clearing cache, clearing cookies, clearing history all from the beginning of time; logging out and back in. It played videos normally previously and still does in other streaming services. I have Widevine enabled and working. It works fine on Chrome.

Exact URL of the website in question:

Did the issue present with default Shields settings? (yes/no)
Yes

Does the site function as expected when Shields are turned off?
No

Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no):
No
Does the site work as expected when using Chrome?
Yes
Brave version (check About Brave):
[
Version 1.31.87 Chromium: 95.0.4638.54 (Official Build) unknown (64-bit)
]