Repro steps:
1. Open a project with HDRP or Universal/Lightweight
2. Create 2 shader graphs
3. Open one of them
4. Create any node, click it, and press ctrl+G
5. Click the node again and press ctrl+C
6. Go to the other shadergraph and press ctrl+V
Expected result: it should paste the nodes, either with the group or without
Actual result: it doesn't paste the node and sends an error to the console
This makes copying and pasting code between shadergraphs very annoying, since you have to remove all of the groups before you copy if you want to be able to paste.