How to remove decals background?

Hi, I have added decals in my scene but I am unable to remove its background, can you please tell me how to remove the background of decals or add opacity in textures like leaf texture or branch texture in trees?

yahaha_decal1
yahaha_decal2

Greetings Neon,

This is actually an issue with the assets at the moment that we are currently working on to fix. Once corrected I will update you but hopefully it will be resolved soon.

Thanks