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DMA receive interrupt stops working

Hi,

I'm using STM32F401RE UART with DMA to receive a continuous stream of data and send over BLE. I am facing issue when that DMA buffer full interrupt stops working as I attach to stream of data. It works perfectly fine when I give data in chunks (20 or 1023 bytes) through PC comm port in non-continuous manner. I am trying to work in debugger mode and it works with PC COM port and hits breakpoints in call back function but not on stream of data coming from module. I check the data streaming module its working fine. I am using in buffer of size 20 and 1023 bytes.

Kindly let me know how to resolve the issue.

Many many thanks.

Kind Regards,
Ghalib