Bank and Perf lettering don't match: e.g. Bank D2 patch 5 is Perf L : 5

If you select Patch 5 in Bank D2 it is shown as L : 5 on the left of the screen. Why don’t the bank letters continue instead of wrapping to A2 after H. Either that or it should be shown as D2 : 5 instead of L : 5. Seems like a little added confusion that could be avoided.