Particle: Stretched Billboard pulls my particles inwards ?!?

Is this using the Legacy system, with random velocity to make them move?

If so, i've had luck with Tangent Velocity-Z (X and Y are give non-helpful sideways motion.)

No, it's the newest Unity version and no Legacy functions have been used as far as I know. One tutorial talks about setting the speed to negative to make particles move inwards but I have set it to positive and the initial suck-in motion shouldn't be there anyway ;)

Stretched billboards in the old system, depending how they were set up (there were more options) were stretched in the direction of movement. So, if your speed starts slow or negative, that could be flipping them to look more inward at first.

Could make the texture non-symetrical, to test (or even for real -- the outward end can be more jaggy.)

Hey, I know this is an oldish thread, but did you manage to fix this? I'm having the same issue.