Using emmisive materials and Render Canvas (multiple screens issue)

Hi! I am working on a project that requires two displays so I am using the MULTIWINDOW plugin.
The way it works is creating multiple windows and adding contents by using Widgets for each windows. So if I want to put 3D scenes in those windows, the way is using render targets in the widgets materials.

But I want to use emmisive materials in my project (GLOW) and the glow effect is a post proccess effect so the render canvas and render targets dont catch the glow effect.

Does anyone knows some workaround for this? All I need is make a project in 2 monitors and have emmisive glow feature on it.