The contextual menu on macOS seems to defy all macOS conventions. It doesn't respect dark mode. It doesn't include services. It doesn't, for example, highlight a word when I double-click on one, and doesn't offer me the standard 'Look Up' option, and it ignores system-wide services that I've enabled...

The UI is also prone to misclicks, given that the first layer of the contextual menu is navigation controls. The only other browser that doesn't respect the OS conventions is Tor Browser.