Niagara fluid particles not visible unless they're at world origin

[updie]

Hey all.

I’m experimenting with the fluid particles plugin, trying to make a sort of vortex/cloud effect. In the niagara editor it works and looks normal, but when I drag it into my level, it doesn’t show up unless I place it at exactly x=0 y=0 z=0.

I’ve tried all the obvious fixes ( restarting, trying in a new level, messing with the bounding box, moving it around…) yet it doesn’t show up unless I place it at the world origin! If I turn on the sprites that the smoke is supposed to be spawning from, they act as normal.

These systems seems pretty new, so I’m wondering if this is a one-time thing that I’m doing wrong or a bug that needs to be fixed.

I’m using unreal 5.3.2, I’ll test it in unreal 5.4 tommorrow

[updie]

I managed to fix it!

Apparently, both your emitters need very particular settings in order to work as intended:

Both need to be GPU particles and have programmable bounds, but your source particles need to have “local space” checked, and your Gas Master doesn’t.

That fixed it for me!