Extension spinner hangs with no error message in Brave Browser when using 'site-access' = 'on-click'

[ngelx]

Description

When using the Omnivore browser extension in Brave, the spinner continues spinning indefinitely without any error message. This appears to be related to an authentication issue.

Steps to Reproduce:

1. In Brave browser, set the extension's 'site-access' setting to 'on-click'.
2. Try using the extension.
3. Notice that the spinner hangs without completing the action.

Expected Behavior

The extension should authenticate and load as expected, or provide an error message if something goes wrong.

Workaround

Setting the 'site-access' to 'on-all-sites' allows the extension to work as expected.

Versions

Brave version: 1.70.126
Omnivore Extension version: 2.10.0

Additional Information

It seems this issue occurs due to how the extension handles authentication when limited to 'on-click' site access.