can't doubble click to make reroute node

in my unreal project I seem to be unable to create a reroute node in blueprints by hovering over and doubble clicking on a link between nodes. If it helps I think it’s not even recognising that I am hoveing my cursor over the link and it work perfectly fine in any other project.

altho this is a rather small problem and could be ignored, I find it inconvient and would very much appreaciate it if someone could help me out.

What do you mean under “reroute node”?