BUG:UI there's something funky going on with Custom Die nodes. If I duplicate a node (and, it seems, if I switch focus to a different app and back) I can no longer open the dialogue to edit the custom faces.
Thanks. I think I fixed it - duplicating custom dice in general was not working properly, which is why the Exploding custom dice was borked. I think I have it set, but I want to do a little more testing.