Material Dispensing acts as collisions when hitting bodies

[creeperz1211]

So, I was bored, then I had an idea, lets terraform Mars! So I opened up the material dispenser and started to unload water onto Mars. After a second or 2, impact marks showed up where the particles hit the planet. Why?

[Jar]

Thanks for reporting. I'm guessing this is due to some of the changes we made to the particle system, but materials probably shouldn't create impact marks. 

I've passed this onto the team.