Po-2 has custom loadouts but i cannot run rockets and bombs simultaneously

The Po-2 has access to rockets, and bombs, but i cannot run both at the same time in a custom loadout, despite the fact 1 pair of 50kg bombs is slung directly underneath the fuselage and does not block the slots occupied by the rockets. While i’m mentioning this issue, i must point out that it’s odd to mandate the rockets be installed in blocks of 4 instead of individually, such as on the IL-2 and other aircraft.