It’s a Chromium issue and all about Chromium. It was reported last September, so I added an update.
- Right button functionality is very unstable
https://issues.chromium.org/issues/369633257
Brave is a modified version of Chromium so it usually inherits new functionality and also inherits bugs. Bugs in functional areas which are not specific to Brave are often caused by the Chrome developers, so it’s better to test for those bugs in Chrome or Chromium and, if you can reproduce them, report them to those developers.