ParticleEmitter.Drag refuses to be non-zero

Why is this a thing?

I want to set the Drag of this particle emitter, damnit. Is there something I’m missing?

Repro steps:

  1. insert a ParticleEmitter into a part.
  2. use the properties window to set the Drag to non-zero… oh look, it’s back to zero.
  3. use the command line to set the Drag to non-zero… oh look, it’s still zero.

Its probably not enabled, would have to check

It isn’t enabled