Particle system controller values are incorrectly used

In Morrowind.exe the Num Valid and Num Particles blocks for an NiParticleSystemController can be set to zero, since this controls only the initial state. The particle counts from NiParticleData will be used. In OpenMW, the values in NiParticleSystemController override everything. If a count of 0 is set then the number of particles spawned will always be zero, the count from the NiParticleData node is not respected.

The mesh which raised this concern can be found here: https://www.nexusmods.com/morrowind/mods/49605 : meshes/i/in_lava_1024.nif