I’ve been using Brave for a couple of years now.
Since the beginning, there’s a weird glitch with copying/pasting.
When I highlight some text and right click > copy, it will stay highlighted for a few seconds, then unhighlight, and it will paste whatever the last previous thing I copied was.
I have to highlight it, let it ‘unhilight’, then highlight it again, and it will properly copy/paste.
It’s been doing this consistently from the beginning.