UE v 4.8
Drawing a material which uses blend type Translucent or opacity mask on Hud using Draw Material or Draw Material Simple functions results in drawing the material with no bloom .
However if the Material blending is set to opaque the bloom works but not with Translucent or opacity mask
steps to reproduce:
1.Make a material with blend type Translucent or Masked
2.Apply inputs to Opacity node if Translucent material or to Opacity Mask node if masked Material
3.Apply texture to emmissive node multiplied with a high scalar to cause Bloom glow
4.Draw the Material on the hud