How do I deal with the white outline that appears around any sprite that I insert? I can't even overlap two sprites visually (for example to create a platform's edge) as there are always that white lines that don't allow me to do that. Tested with different settings (webgl on/off, pixel roundings, etc.) and on different graphics cards. I found the same problem on forum in 2014 but there is seemingly no resolution to this problem yet.
You can see this line on the right side of the sprite.