Sankey diagrams with negative values

[CAFxX]

Description

When one of the entries in a sankey diagram is negative the result is correctly summed, but the chart is rendered incorrectly.

Steps to reproduce

• Paste the code sample below into the live editor
• Notice the misrendered chart (negative value of "liabilities" is shown as 0, band is not rendered)

Screenshots

Code Sample

sankey-beta

"stocks","financial assets",100
"cash","financial assets",20
"financial assets","net financial assets",120
"liabilities","net financial assets",-50
"real estate","net worth",100
"net financial assets","net worth",70

Setup

• Mermaid version: 11.3.0
• Browser and Version: Chrome 130.0.6723.58 (Official Build) (64-bit)

Suggested Solutions

No response

Additional Context

It would be great if negative values were correctly handled and rendered to mean "subtract" the negative value from the target.