The top material function was placed in a graph directly. The second was generating by copying the first node. Note that the input pins changed color which indicates that each input on the new module does not have an associated default value which is inaccurate. 


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Steps to Reproduce

Copy a material function with an input parameter with a default value.


Edit: 1/15/2020

1.Download the Attached Sample Project, Launch UProject File

2.From Within the Content browser, double click on M_Test Material Node

3. Duplicate Material Function as indicated by comments, and the additional screenshot in the description.

Results: Nodes break their connection.

Expected: Nodes maintain their connection.

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ComponentUE - Rendering - Materials
Affects Versions4.24
Fix Commit9961146
Main Commit9961148
CreatedMay 22, 2019
ResolvedAug 27, 2021
UpdatedDec 2, 2022