Ingress resource can't be deleted after deleting namespace

I deleted and recreated a namespace in Rancher GUI which still had a ingress resource in it.

The ingress resource is still showing in the GUI but I am not able to delete it. Rancher says it does not exist. I can edit the resource both in the form and yaml, but am not able to save it because Rancher says it does not exist.

How do I delete this dangling ingress resource?