Very quiet "Rice Krispies" with Build 1019

With Build 1019 for Windows, but not A+ on Mac (and not noticeable on previous Windows builds), I am getting very quiet crackles as if there was an LP playing, though much less loud than that (perhaps a little difficult to hear - best to listen to a low level or silent part of a track). This is with microRendu 1.3 to an iFi micro-iDSD at DSD512. Can anyone reproduce?

No problem today with build 1020, so we can move on.