It should not.

Warcraft previously did nothing on down.
And everything on release.

And we were able to send a keybind on down.
Which did whatever.
And another on keybind up.
Which did whatever.
Both fired off previously, despite warcraft by default only doing something on one of the two.

Now, by default it does something on the opposite of the two.
And we're still giving an instruction for both the press and the release.