hud Remove White Rectangle? - HUDScaleFactor 0.75

[Kaya Kiyori]

When you edit the object of an HUD and scroll to see everything out of the viewport (hud-area) there is a white rectangle, to make aware, what you can see and what not.

I would like to remove it, because I would like to reduce the scale of my HUDs. Have now a 4k monitor but can't make use of the benefitis of it, when the HUDs just don't scale with resolution.

In Firestorm I wasn't able to recduce the HUD size (1.00 is the minimum scale), but with a Debug-Setting called HUDScaleFactor it seems to work.

But you see the white frame/rectangle then... is there a way to remove it?