Description

The fix for [Link Removed] caused a regression where links to material nodes no longer carry over when a group of nodes is copied and pasted

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User submitted Image and repro steps appended. I confirmed this was working in 4.23, broken in 4.24.0 and fixed in 4.25 MAIN @ CL 10730208   -Alex

  1. Create a Material Function with 3 Function Inputs (multiply all function inputs together for the output)
  2. Create a Material and put in that function 
  3. Promote Variables from all Function Inputs
  4. Copy/Paste this structure (3 Params connected with the function) 
  5. That should work
  6. Now go back to the function and set one of those 3 Function Inputs to "Use Preview Value as Default" = true
  7. Compile and save all 
  8. Go back to the Material and do the copy/paste thing again
  9. Now all 3 Connections should be gone
Steps to Reproduce

Create a material function node and a second node in the material editor. Connect them, then copy and paste the group. Note that the connections are no longer present

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Fixed
ComponentUE - Rendering Architecture - Materials
Affects Versions4.24
Target Fix4.24.2
Fix Commit10801172
Main Commit10803843
Release Commit10801172
CreatedDec 3, 2019
ResolvedDec 18, 2019
UpdatedNov 2, 2021