Order independent transparency subtracts red channel from rendered alpha

Hi!

I noticed a weird bug when trying to render a scene with order independent transparency:
The red channel in translucent objects results in black alpha.
These are just cards with translucent materials on them. When rendering with order independent transparency activated, the alpha channel is missing the red component of translucent materials (with full opacity).
Everything renders as expected with opaque materials.

Is this a known issue?