Brief flash of text (some type of code) when opening a web page for the first time

Latest version of Brave:
Version 1.24.85 Chromium: 90.0.4430.212 (Official Build) (64-bit)

OS : Windows 10 Pro with latest updates, 64-bit x86 based processor

What happens:
Whenever I go to a web page for the first time during that session of using Brave, a black screen with white text flashes up for a fraction pf a second before the expected web page displays. Subsequent visits to the page do not flash the offending screen.
I can’t provide a screenshot because it happens too fast, but it us very distracting and annoying.
The text on the screen appears to be some code (Open Window, Close Window, View, Copy, etc.)


What is expected:
The desired web page should open without the flash of the other screen.