Their behavior makes Firefox unlike literally every single other program with a text box, except the singular other browser people actually use. Neither browser should be different for the sake of it.
Sorry not sure what you mean? This is exactly how Safari, Chrome, and I guess others I can't immediately test work. Seems good to work as expected from other browsers?
They're saying, I think, that the textbox which is a URL is a special textbox but it shouldn't be. It should be the same as any other textbox in Firefox.
> It should be the same as any other textbox in Firefox
Editing strings in `about:config` seems to behave identical to the URL bar, and Ctrl+F behaviour is similar (but other search bars, like in settings, do not highlight all). Possibly more, just did a quick check of the text boxes I remember Firefox's UI having.