Arrangement of discharge resistors for capacitors in series
It's essential to link points A and B.

Even if the capacitors have the same value, if they have different leakage currents, then under DC conditions, the potential of point A, which was initially halfway between the rails, will drift towards one or other rail, over-volting one of the capacitors.

R1 and R2 should conduct at least 10x the expected leakage current, in order to keep the voltages balanced.