MSPM0G1507: Unexplained data transmit during I2C Controller Operation

bool ***_I2CController_Write(uint8_t target_addr, uint8_t mem_addr, uint8_t* buffer, uint8_t length){
    // ...
    
    // I2C reset (added as a workaround for the issue)
    DL_I2C_reset(I2C1_INST);
    DL_I2C_enablePower(I2C1_INST);
    SYSCFG_DL_I2C1_init();

    // ... (setting mem_addr and write data into s_tx_packet)

    s_tx_count = DL_I2C_fillControllerTXFIFO(I2C1_INST, &s_tx_packet[0], s_tx_len); 
    // Note: s_tx_packet already contains mem_addr and write data

    // ... (includes status register checks)

    DL_I2C_startControllerTransfer(I2C1_INST, target_addr, DL_I2C_CONTROLLER_DIRECTION_TX, s_tx_len);

    // ... (includes status register checks)
}

bool ***_I2CController_Read(uint8_t target_addr, uint8_t mem_addr, uint8_t* buffer, uint8_t length){
    // ...
    
    // I2C reset (added as a workaround for the issue)
    DL_I2C_reset(I2C1_INST);
    DL_I2C_enablePower(I2C1_INST);
    SYSCFG_DL_I2C1_init();

    // ... (setting mem_addr into s_tx_packet)

    s_tx_count = DL_I2C_fillControllerTXFIFO(I2C1_INST, &s_tx_packet[0], s_tx_len); 
    // Note: s_tx_packet already contains mem_addr

    // ... (includes status register checks)

    DL_I2C_startControllerTransfer(I2C1_INST, target_addr, DL_I2C_CONTROLLER_DIRECTION_TX, s_tx_len); 
    // Note: transmit mem_addr

    // ... (includes status register checks)

    DL_I2C_startControllerTransfer(I2C1_INST, target_addr, DL_I2C_CONTROLLER_DIRECTION_RX, s_rx_len); 
    // Note: receive

    // Harvest read data
    while (s_rx_count < s_rx_len) {
        if (!DL_I2C_isControllerRXFIFOEmpty(I2C1_INST)) {
            s_rx_packet[s_rx_count] = DL_I2C_receiveControllerData(I2C1_INST); 
            // Note: collect the received data
            s_rx_count++;
        }
    }

    // ... (includes status register checks)
}