Brave Browser Beta broke after update, text can not be seen, become unusable

Description of the issue: No text in the browser can be seen. Only texts on some websites, like YouTube .com, Grok .com, and a very few other websites, can be seen. I have tried disabling the “use hardware acceleration when available“ and saw that it was already disabled. I have tried on facebook .com, messenger .com, whatsapp .com, gmail .com, google .com, github .com etc. We can see icons, though.

How can this issue be reproduced?

Just open the browser. Try some browsing.

Expected result: Text should be visible and fine

Brave Version (check): Brave Browser 140.1.83.86 beta

Additional Information: About Operating System (Kubuntu):

PRETTY_NAME=“Ubuntu 24.04.3 LTS”
NAME=“Ubuntu”
VERSION_ID=“24.04”
VERSION=“24.04.3 LTS (Noble Numbat)”
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL=“https://www.ubuntu.com/”
SUPPORT_URL=“https://help.ubuntu.com/”
BUG_REPORT_URL=“https://bugs.launchpad.net/ubuntu/”
PRIVACY_POLICY_URL=“https://www.ubuntu.com/legal/terms-and-policies/privacy-policy”
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo

I am seeing the same issue. Attached is screenshot of Gmail - even some Brave UI elements are not loading (see my attempt to turn shields off).

I installed Microsoft Edge Browser after facing this. Same case happened there too. Firefox is running fine. I think there are some issue with chromium based browser.