Hard edge in smoke explosion flipbook

Trying to resolve an issue with a smoke explosion flipbook having a noticeable hard black edge instead of a smoothe blend to alpha.
Will this require a new render or is there some material texture setting that can fix this?

Sounds like you have the material set to masked, instead of translucent.

Did you ever find a solution to this? I’m having the exact same issue and the only answer I can find is that the sprite material is set to Masked, when it should be Translucent.

Except my sprites aren’t using a masked material, they are all set to TranslucentUnlitSpriteMaterial.