I’ve got two objects that have the same material.
This is the material and its material graph
its a pretty simple semi-translucent emissive material called “TestScreen”.
Now on one object, called “Adbar” (bottom image), the material glows but on the other, called “susbakaland” (top image) it doesn’t.
Everything about the two objects are the same in their respective “Details” panel but somehow the material acts differently on them. The only difference is that the Adbar object has multiple material slots while the other it has one.
I edited the susbakaland object in blender and added a cuboid on top that has a different material than the plane and exported as a different object, called “susbakalandia”. Now, that object has two material slots and on this object the TestScreen material does glow.
To really see if its just the case that the static mesh needs two material slots to make the TestScreen material glow, I duplicated the susbakaland static mesh, with the duplicated material being called “susbakalandio”, and added an additional material slot to that object. Guess what?! The material does glow on this object!
I upgraded my game project from UE5.2 to 5.5, and on the 5.2 version of the project the Adbar object didn’t glow but on 5.5 version it does.
I thought that this was some feature, now I’m leaning towards it being a bug.
Can someone explain why this is happening and how to fix it?