fluid amount in fluid drawer sometimes becomes 2.1G when fed through third-party interaction while the input amount exceeds free space

<img width="703" height="281" alt="Image" src="https://github.com/user-attachments/assets/ff41c9ba-04bd-4403-948b-99bbbe5e9b77" />
Triggered by right-clicking fluid drawer with GTCEu drum has a chance to make fluid amount become 2.1g