Crisp pixelated font inside SubViewport, font oversampling not applied

Godot Version

V4.3

Question

I have a label using a pixelated font, this label is inside a TextureRect which has a shader that gives a 3d perspective look when hovered. I want the shader to affect the label also, so I added a SubViewportContainer and a SubViewport as parents to the rect and applied the shader to the Rect. This works but now the oversampling settng I set up on the pixelated font for it not to get messed-up is not getting aplied anymore. I get some anti aliasing and it’s hard to read the text.
I have tried to enable oversampling on the subViewport but there’s no such option.