LibGDX Resizing bug?

Hey guys, I have this kinda interesting problem with my game…

So I render a lot of rectangles over my entire screen using ShapeRenderer (fading in/out effects, day/night cycle, pause menu background, etc…). I’ve found that
when I resize the window down, the rectangle no longer covers the entire screen. I’m updating the projection matrix of the ShapeRenderer thinking that would do it.
I even tried substituting in different values for the rectangle width and height (Gdx.graphics.getWidth()/getHeight() and the dimensions of my viewport), but they seem to be reading correctly. I’m not sure why it isn’t responding to the resizing correctly…

Any ideas?