The current workaround would be repeat the 1st pattern in the end of chain (A01-AXX-A01).
I think would make much more sense to select pattern/banks by holding PTN/BANK button and pressing the desired number. Would be more intuitive and consistent as Func and TRK buttons also need to be held. And this way chaining patterns would be like holding PTN then selecting pattern numbers in any order (until you release PTN).