WeatherUnderground receiving Rain Past hour as Precip Rate

Now that I have Sky up and running, I’ve noticed that the Precip Rate listed on WeatherUnderground for my Sky isn’t reflecting the active precipitation rate, but rather the Last Hour precipitation. As the time has passed since the rainfall event, the WeatherUnderground value for Precip Rate has fallen in line with the Past Hour value in SmartWeather.

That’s not a WeatherFlow bug. It’s Weather Underground.

I would not call that a bug
but how that works
WU rain rate is rain in the immediate last hour
?