I’m experiencing a similar issue with brave-bin from the AUR in xfce. Happened after last updating to latest version, which is based chromium 95. I guess another work around is selecting the classic theme in the browser settings instead of the GTK+ theme.
Downgrading to Google Chrome 94 can’t be the solution, I think, since Google Chrome 95 closed a total of 19 security holes. Why don’t you just use Firefox until then?