Just reporting a little issue I’ve found for you.
Problem:
Due date sets to 1st of the following month unless you set to “use client terms”
How To Recreate:
Setup a recurring invoice, set due date as anything other than “use client terms”.
Could it be my installation:
I do have these client paying auto bill through Gocardless this could be affecting it?
Workaround:
Set all client terms to mimic the correct due date. i.e NET7 from the 7th of each month makes correct due date as 14th.