Unity Issue Tracker - [MaterialConverter] Particles Unlit Rendering Mode Subtractive gives empty Surface Type dropdown after the conversion

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Under Consideration for 6000.6.X

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Issue ID

Regression

[MaterialConverter] Particles Unlit Rendering Mode Subtractive gives empty Surface Type dropdown after the conversion

-

Jan 30, 2026

Steps to reproduce:

Download attached project and open in Unity.
In the Project Window, select the particleUnlit.mat material.
Make sure Rendering Mode is set to Subtractive.
Open the Render Pipeline Converter >> Window >> Rendering >> Render Pipeline Converter.
Scan and convert particleMaterial.mat material.
In the Project window, select the particleUnlit.mat material.
Observe empty Surface Type dropdown.

Actual results: Surface Type dropdown is empty after the conversion.

Expected results: Surface Type dropdown should not be empty after the conversion.

Reproducible with versions:

6000.3.2f1; 6000.5.0a4;

Tested on (OS):

MacBook Pro (16-inch, 2021), CPU: Apple M1 Max, Memory: 64 GB, macOS Tahoe: 26.1