Block All Cookies toggle appears briefly when refreshing Shields settings page

[evanrgardner]

Description

If the #block-all-cookies-toggle flag was enabled at brave://flags for any period previously, the Block All Cookies setting will appear briefly on Global Shields settings page when the page is refreshed. This occurs if the flag is enabled, disabled, or set to Default.

The toggles revert briefly to the Block All Cookies section before returning to normal. You’ll see the red text in the Block Cookies section appear quickly before it reverts back to original Shield settings.

Related thread: https://www.reddit.com/r/brave_browser/comments/1kmbxyh/comment/msgmjdh/?context=3

Steps to reproduce

1. Enable #block-all-cookies-toggle flag
2. Set the flag back to default
3. Visit brave://settings/shields and refresh the page

Actual result

View the red text in the Block Cookies section appear quickly before it reverts back to original Shield settings.
https://github.com/user-attachments/assets/09075d7d-e657-4009-a7ff-12e06cd47c27

Expected result

Global Shields settings page should refresh to the same settings and Block All Cookies settings should not be shown.

Reproduces how often

Easily reproduced

Brave version (brave://version info)

Can be reproduced across all builds

Channel information

• release (stable)
• beta
• nightly

Reproducibility

• with Brave Shields disabled
• with Brave Rewards disabled
• in the latest version of Chrome

Miscellaneous information

No response