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
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
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
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-85358 in the post.