Fire Lighting disappears with Particle System

Development Rendering
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1

I was playing arround with UE4 and i created a dark enviroment with rooms and stuff. In one of the rooms i placed a fire but i came across with this bug:

I made a video because it was hard for me to explain. Camtasia decided to make the quality similar to a potato but i thing you get the idea.

Note: It does the same with any fire

2

You need to increase the bounds of your particle system.

3

To add to what Jacky is saying which is absolutely correct - I would recommend since the fire is your primary light in that room to add a point light to the room as a fill.