Dual Port Nios V BSP error

I've created a Nios V qsys with dual port onchip memory in Quartus Pro 26.1

True dual port, first port connected to instruction manager, second - to data manager.

Base addresses automatically assigned the same to both.

But i'am unable to create the BSP due to memory regions overlapping error!

Of course the addresses are same - its the same physical onchip memory!

Any solytion, please?

Regards, Vlad.