Transparency generated around text on render texture

Hi,

I wanted to project my User Interface onto a surface in the 3D scene. To do this, I set up a second camera (orthographic) and place all UI elements in front of it, on 3D Canvases. The second camera then renders into a render texture, which is displayed on an object in the normal scene.

All of this works fine. However, when I add text to the UI elements, there is suddenly a transparent border around the text (probably due to anti-aliasing?). What I expected was that at these places, the...

Transparency generated around text on render texture