I have noticed that antialiasing of second hand in onPartialUpdate(dc) not worked for the new fr 255/955 devices.
I set dc.setAntiAlias(true) in onUpdate(dc). For all other devices it works then also in onPartialUpdate(dc), but not for fr255/955.
As workaround I call dc.setAntiAlias(true) every second in onPartialUpdate(dc) before I draw the second hand. Then it works
I see the issue in simulator and don't know how it works on a real device.