It looks like the maple stm32 library doesn’t support the third parameter being used in the requestFrom calls on lines 71 and 105 of MPU6050_tockn.cpp … and there is even a comment in the TwoWire source saying that it’s a todo! 
This is why it works with the ‘normal’ Arduino stuff, but not the Maple STM32 core… they didn’t get around to adding it! 
It seems that it should be ok to remove the third parameter - (int)true - from those two calls … so try that and see how you go. The code should compile to completion at least. 
And Ivan, if you’re reading this… dang, this VSCode integration is COOL… being able to just ‘peek’ at the code related to function call! 
