SpriteFont DrawString issue making text into black boxes

[Zoardedz]

I'm trying to make a GUI SpriteBatch that'll render a rectangle and an FPS counter as a test, I'm using your vs-templates (Win32 no device resources) with a few changes just making it more polymorphic, that aside there's a bug in my code that turns the text into black boxes if layered above the drawn rectangle, I assume this is because it's trying to reference the texture I used for the rectangle (images below)


I made a different SpriteBatch instance for the FPS counter but it also gave me the same result (surprisingly??)
I assume it could be as I said, trying to reference the image I used for the rectangle instead of the SpriteFont textures or an unrelated issue relating to blendstates or something else.

[Zoardedz]

-I also used RenderDoc to check if the FPS text displays correctly when layered under the rectangle and it displayed the text like normal

[Zoardedz]

If it helps, this is practically the draw function every IElement2D uses.

[walbourn]

Is the render target here alpha-blended? Note that SpriteBatch defaults to using Premultiplied alpha, and if you are using straight-alpha with the rectangle it will be 'wrong' here.