RLC is sending wrong ACK (on different packet number)

Hi All.

In 5G, when using GBR QCI profile and sending data over it, I see that on PDCP layer data is getting dropped because RLC is sending wrong ACK (sends ACK on different packet number).

This happens only on GBR QCIs.
When using non GBR QCIs then all is fine and data is getting pumped properly.

Any idea?