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This bug doesn't always show up when you're making a blueprint but looks like it happens behind the scenes every time, it's just invisible at first.
To replicate this bug you need to do the following:
1. Copy an existing working biochamber(s), here the copy that you have made looks like it's just fine (shown on the picture) 2. Shift click what you copied over the biochamber(s) you copied, now the X appears in the middle of the biochamber and the fuel wants to be removed (as shown on the pictures below) 3. Last copy or blueprint the new biochamber(s) where it now shows the ghosted nutrients on the copy itself and the toggle to include vehicle fuel appears (pictures below)

You did not include a Save or Blueprint String so we cannot see exactly what is going on.

132248 talks about how Item Delivery Ghosts inside of Ghost Buildings are included in Blueprints; but not those inside of Regular Buildings. That looks like what is happening here based upon the screenshots.

eugenekay wrote: Mon Sep 28, 2026 1:33 pm You did not include a Save or Blueprint String so we cannot see exactly what is going on.

132248 talks about how Item Delivery Ghosts inside of Ghost Buildings are included in Blueprints; but not those inside of Regular Buildings. That looks like what is happening here based upon the screenshots.

A save or a blueprint is not needed because I'm describing the behavior step by step and it is replicable on any bio chamber.

Yes I am aware of that behavior and it is not what the problem is. The problem is that it's picked up when there is nothing being requested in the biochambers and they are just working normally, that's why I wrote step by step guide how to replicate it and then you get to see it actually got into the blueprint as vehicle fuel where if you don't do the steps first it is not picked up in the blueprint and works as it should.

Thanks for the report. This is now fixed for the next release.

Amazing, thank you for the fix!