When you have a Ref column that allows adds per below picture, does clicking the New button actually take you to the form view of the referenced table? Or are you still within the parent tables form view?
This particular New button takes the user to an Equipment table form view where a new piece of equipment can be added. I have an action connected to the Equipment form that changes the value of a column in a child table of the Equipment table when the form is saved. It works fine directly form the Equipment table form view.
If I add a new piece of Equipment from the Ref column above which is a Service Ticket table, the action does not run. I suspect it’s because the column to be changed is 2 references away from the Ref column in the picture and the form view from the Ref table isn’t actually the Equipment form view but I’m not certain.