Not sure if we are talking about two different things here.@Krayz - The mixed together part of the definition refers specifically to the "flour, water, and yeast or another leavening agent," not other ingredients that many breads do have.
The definition is about how the dough is created.
Curry buns (they are buns anyway, not bread) are part bread + something else. Thus no longer bread.
Just like a pizza is part bread + something else.
It's the *exact* same thing with that dish.
You don't call pizza "bread" or a "bun", do you?
As mentioned, Melon buns probably taste similar to Streuselbrötchen, which is basically sweet bread.
Those at least are buns, and they can technically be made as bread although you wouldn't do that.
Even the english language seperates breads from buns btw.
With the same definition MFauli gave.
Not that it's important or anything. (I consider this discussion a meme)