Global action to popup to create row on same model and another row on model that is a junction to it. Setting the default value for lookup on the junction row to the first row in first model. Everything should be good to go. Models show everything is appropriately setup. Popup is wonky.
If I set "create new models" first, then put "show popup", it seems like context carries over and I only see one. If I set "show popup" first, then put "create new models", I see all of them and I can choose whether I would want to see it on top or bottom.
Please Excuse My Dear Aunt Sally for PEMDAS order of operations. I had no idea that this is how this works.
Let me know if you get what you want by switching the order.