I think this is Chromium related but the latest version of Brave on both my Zenbook which has an Intel Iris XE and my Desktop which has an RTX 4070 “flash” black for a small moment when you open up Brave. With the previous release, didn’t happen.
Thanks! - on the zenbook (Iris XE), disabling acceleration goes to normal / no black flash - wasn’t happening say 1 month ago though. Guess drivers (32.0.101.6557) or brave build related.
Same also on my desktop on the RTX 4070 Nvidia Drivers 572.16 “game ready”