Particle Viewport - No Glow/Bloom

Hello Iam following a tutorial currently trying to re-create this effect UE4 - Tutorial - Magic Circles! - YouTube in the Video by Dean Ashford his texture/particle is really glowwy/bloomy in his viewport ingame or in the particle editor viewport.
My issue is that it is glowwy/bloomy in the game viewport but not in the particle editor viewport, anybody who knows a solution to this?

Did just the same like in the tutorial and this is the result:
https://puu.sh/w816N/fe1b107e0d.jpg

As you can see in the particle viewport it isn’t glowwy at all.