I have a strange issue with charts in my app "myBattery". The chart has one line, but when I zoom into max level, more lines appear in the screen.

I contacted Telerik.com because the chart control is by Telerik. After some days they confirmed this behavior appears only on Lumia devices. Then I opened a ticket in Windows Phone Dev Team, and they reported the same behavior only on Lumia devices.
Then I ask to Nokia to investigate, please

Here the screenshots: http://tiziano.cacioppolini.it/public/nokia/step.zip
Here the sample project: http://tiziano.cacioppolini.it/publi...a/TestZoom.zip

To help you to recreate this problem, follow this steps:
- step1.png: open the sample project
- step2.png: rotate the device in landscape mode
- step3.png: zoom the charts and two more lines appear.

Thanks you