So I have a scene that has a light function material to create a flickering light effect. I use the same material for the emission on the object. When I first open the project, I can see the effect and it seems to function correctly.
However when I “Play this level in active level editor viewport”, the Light Function Material stops working. I can see the flickering on the emission itself, but the one attached to the RectLight is clearly no longer working.
When I exit the “play in viewport”, the Light Function Material remains off and I have to close Unreal and re-open to get it to work again.
The Light is set to Stationary, Lumen is on, Support PointLight WholeSceneShadows is checked on.
I’m hoping that someone here might have a idea of what to try, as I’m fresh out.