I have noticed that the total on the right-hand side on top of the outstanding invoices list shows the total of outstanding invoices before any partial payment have been made.
In my view, this total should be the same as the actual outstanding amount which will correlate with the Debtors aging report. (screenshot enclosed).
I’ve raised issues relating to this I think, with it not being clear which balances are part paid either and some confusion when checking invoices due for payment (full invoice balance being shown not balance due following credit notes issued etc).