What were you doing when the issue happened?

Using the alloy furnace and letting the output slot fill up. Also happens with the blueletric version

What did you expect to happen?

It should stop smelting/using fuel when the output is full

What happened instead

Forge and Minecraft version

1.19.2
forge 43.1.32

Bluepower version and build number

0.8.300-alpha

Thanks for reporting, fixed in bluepower-1.19.2-0.8.301-alpha-universal.jar