.vpcf particle collisions don't work

[DrakeFruit]

I tried messing around with the dedicated particle editor and found that collisions just don't work at all

https://github.com/Facepunch/sbox-scenestaging/assets/94070205/c8702bda-5c8e-43b6-98ef-eacdd55f2889

I've got the actual particle effect in a zip in case I did something wrong (github won't let me upload the actual file by itself) as I've never used the particle editor before now. testing.zip