The ball detection was less reliable under some specific light conditions. There is also a couple of small bugs that prevent the new streaming feature as well as changing the name of the device. Everything has been fixed in firmware 2018-04-04.
Some devices can show a black screen when doing "Line Call". The cameras appear black. It has been fixed in firmware 2018-03-03.
The units appears frozen if the date is changed to the future. It has been fixed in firmware 2018-02-02.
Some devices have ghost touches. It has been fixed in firmware 2017-10-31.