RadButton with button type checkbox or radio has incorenct margin in Silk and Glow.
Due to the negative value of the margin, the checkbox/radio button icons are partially hidden.
The following CSS fixes the issue (for Silk skin):
.rbCheckBox.RadButton_Silk .rbToggleCheckbox.rbIcon, .rbCheckBox.RadButton_Silk .rbToggleCheckboxChecked.rbIcon, .rbCheckBox.RadButton_Silk .rbToggleCheckboxFilled.rbIcon, .rbToggleButton.RadButton_Silk .rbToggleCheckbox.rbIcon, .rbToggleButton.RadButton_Silk .rbToggleCheckboxChecked.rbIcon, .rbToggleButton.RadButton_Silk .rbToggleCheckboxFilled.rbIcon, .rbRadioButton.RadButton_Silk .rbToggleRadio.rbIcon, .rbRadioButton.RadButton_Silk .rbToggleRadioChecked.rbIcon {
margin: 0 !important ;