[FeepingCreature]

I agree. It seems there are two conflicting views here.

"Firefox is a kind of browser, which happens to be running on a desktop."

"Firefox is a kind of desktop app, which happens to be rendering websites."

In the first, Firefox should act like other browsers because "browsers" are the relevant reference group. In the second, Firefox should act like other apps on the platform because the platform is the relevant reference group. Personally, I think the second view is simply correct. How often do you switch between browsers? For all but a few power users, switching browsers is vanishingly rare compared to switching desktop apps. This suggests that at least for browser chrome, desktop consistency is much more important than browser consistency.