STM32F7xx CAN#3 receive error

Hi.

I've been using a PCB with a STM32F765VGT(100pin) for several years.

The PCB has Ethernet, USART1, CAN1, CAN2, CAN3 peripherals and I has been used without problems in an AC5 RTX environment.

I migrated from AC5 RTX to AC6 RTX5.

The Ethernet, USART1, CAN1 and CAN2 work without any problem when receiving and transmitting.

The CAN3 transmits well but not receive data.(only receive remote  transmission request frame)

I used the CMSIS-Driver library. and I tested it under various combinations of MDK-ARM and driver versions, but the results were the same.

I 'am looking for advice from experts with experience with this issue.

Best Regards.

Ahndy.