Point density - particles not rendering when object is big

Hello.

I have a problem with particle point density. I made something like this. What I don’t know is when i scale the effect particles start to disappear. If cube has a dimension over 150 blender units things start to break. It doesn’t make any sense to me. Increasing resolution don’t solve this. Any help?

GIF presenting the issue:

Node setup for Vulumetric Material Cube:


Blend file: https://www.dropbox.com/s/ywuqxqdqnn75uh6/issue1.blend?dl=0
Blend file + particles cache: https://www.dropbox.com/s/ym1djboffcl5xvk/issue1%20blend%2Bcache.zip?dl=0

Nobody will help? :frowning: