It may be caused by one of your installed extensions but it’s hard to tell what the cause is if it’s not reproducible. Keep an eye out for it and if it happens again please let me know and we can troubleshoot the issue. I’ll leave this thread open in the event this happens again.
I’m new to Brave, so I haven’t yet gotten into any customization other than altering some settings. All the extensions were recently imported from my Chrome setup. Never had this happen in Chrome, or Chromium.
Unless it has something to do one or more of with these Chrome experimental settings (I have several more enabled not shown on the image), i.e.