Can't hide points on iOS 7.0 (7.1 works fine)

[skywinder]

I create TWRDataSet: TWRDataSet *set = [[TWRDataSet alloc] initWithDataPoints:points fillColor:color strokeColor:[UIColor clearColor] pointColor:[UIColor clearColor] pointStrokeColor:[UIColor clearColor]];

On iOS 7.0 the dots not disappeared. I was try to update library from https://github.com/nnnick/Chart.js/ But it's not working too, and also can't represent negative values in line chart. Tiedy to update js from https://github.com/FVANCOP/ChartNew.js, but results the same. iOS 7.0:

iOS 7.1:

[skywinder]

Here is related issue in ChartNew.js repo: https://github.com/FVANCOP/ChartNew.js/issues/105