Describe the bug
The built-in text labels for both the CheckBox and RadioButton controls gradually gets more and more off center as the system's text scaling % increases.

Steps to reproduce the bug

1. Set text scaling to 150% or higher
2. Open the XAML Controls Gallery
3. View any of the CheckBox or RadioButton controls

Expected behavior
The text labels should remain aligned

The circle inside the radiobutton is not in the center when I use it in a high dpi display, using Google Chrome.

Red line: actual
Green line: expected