Fancy Block Particles can't find particles for the top face of Chisel blocks.

Chisel version: 0.0.8.11
FBP version: 2.0
Forge version: 1.10.2-12.18.3.2221

Example: https://streamable.com/deuzl

Haven't tried this yet, but all I can say is that it's not a bug, since it's not a regular block..
I don't know how exactly to explain this to you, but the way my mod gets the top texture is that it gets the texture file which the block uses. The Chisel block uses many texture files on one side of the "block".

Oh wait.. I forgot to look at the gif :D I thought that this mod allows you to carve blocks...
Well.. with getting the top texture.. its kind of a shot in the dark... you get a list of "BakedQuads" and you never know which one is the top one... so i basically select the first one.. I know how to fix it so that it has a texture, but it might not be the top texture..

The texture isn't null tho..

We don't do anything special for top faces....this seems like a bug in that mod.