Related to issue #232 , on latest version this bug is still present. It is replicable in the same way.

Do not hesitate if you need additional information, I'm not on my gaming computer, I can't take screen for now.

The issue is fixed in my development environment but has not been pushed to a build on CurseForge yet. I've been unable to actually focus on development for a few weeks now due to work obligations. But I promise I'll get it pushed out as soon as I can.

No problem, thanks for taking the time to reply.

happening to me as well.
issue: Putting graphite into the combiner without selecting a recipe outputs infinite diamonds.
Repeatable: yes
Version: alchemistry-1.18.2-2.0.9

This was fixed a few versions ago. I forgot to close it. Please make a new issue to track related issues if you find it again!