Changing line thinkness causes line to not be rendered

When drawing a canvas line item to a render target, changing the thickness of the line to anything other than 0 causes the line to not be rendered if the associated material's blend mode is set to Translucent.

1. Download & extract attached project
2. Open project and PIE
   • Notice that the red and blue lines form an X
3. Open the project's .sln file
4. In LineCanvas.cpp, change line 34 to thickLine.LineThickness = 10;
5. Compile
6. PIE

Result:
Blue line is no longer rendered other than where it overlaps the red line.

FCanvasLineItem doesn't draw with line thickness > 0