Original issue on FTB Github: FTBTeam/FTB-Builders-Paradise#9
Issue:
For example if shooting on a slab or stair with a Shuriken from Tinkers

Hi, I will test this later but am confused as to why this would be happening. I only check to see if the player is holding a snow layer from vanilla

Sorry, I have noticed what the problem is. In the current release I accidentally left out an if statement that checks what Item the player is holding. That is a bug I fixed in the next version but I have been unable to get it complete. An update which fixes this issue and updates the model along with various other things will be out within the week.

Thanks trikzon

c0a7c0b
Fixed and now published on curse. Thanks for reporting!