I have a Camera Component Reference connected to a Get World Transform node and a Spawn Actor node.
I tried dragging and dropping a Scene Capture Component 2D to replace the variable, which displayed the “This will break connections” popup and then hung the editor completely, requiring killing the process.
Obviously not a major issue as it’s very easy to work around and not likely to happen much, but I figure as it’s a full crash it’s worth reporting so you know.
I tried it twice and it happened as above both times.