You have added some function for the Alt Gr button on the keyboard for new tab - but trying to do @ now with a swedish layout keybord is very messy. We use on the swedish layout Alt Gr + 2 to maek that at symbol. But not its not possible as it opens new tab
Quite critical really.
Tested Windows 10 Pro - Latest Brave as of today. This problem was not there yesterday (before I updated Brave just now)