Getting error when copying/pasting nodes

I am on version 2.1.3 of NR. This is a brand new installation.

When I try and copy/paste a node I get the error when pasting it

ERROR: TypeError: Cannot set properties of undefined (setting 'label')

Okay. Sorry to hear that, but we're not going to be able to do much without more information.

For example, could you export the node in question and share it here so we can try to recreate it?

It was all nodes. I am sorry, I have since rebooted and all if good now. If it comes up again I will surely export some samples.