Particle initial size ignored when using Ribbon

I’m trying to create a ribbon with some initial data distribution (in this case controlled by the blueprint). However, the ribbon width doesn’t seem to be affected by particle size.

Here is how the particle system looks without Ribbon

And with the Ribbon

The only difference between the two is the Ribbon DataType module.

Is this a bug, or am I missing something?

Same problem here, looks like a bug.