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Bug Report: STM32CubeMX v4.16 USART configuration baud rate capped at 500000

Question asked by Goodman.Stephen.001 on Oct 6, 2016
Latest reply on Oct 20, 2016 by Goodman.Stephen.001
I am trying to configure STM32F030RCTx USART1 and USART3-5 to all have 921600 as the baud rate.  USART3 refuses to take a baud rate that high.  The highest it takes is 500000, any higher than that and it reverts back to the last entered value (even 500001 is too high).

All the other USART I am configuring do not have this problem (the highest baud rate they can take is 1500000).

I am having to configure USART3 to have a baud rate of 921600 using the HAL driver after USART3 has been automatically initialised using MX_USART3_UART_Init().