To recreate the problem:

1. Create a new Telerik Winforms .Net Project
2. Add a radButton
3. Change the font property in the designer to a different size

Workaround: change the font for the TextPrimitive:

Just like in the case of RadCheckBox, RadToggleButton has a few states. Therefore, we need to add the possibility in Visual Style Builder to style the RadToggleButton when it is disabled and taking into consideration the toggle state (on/off)

When a RadCheckBox is in Indeterminate state, the user should be able to see a square instead of checkmark.

IMPROVE. RadCheckBox - one should be able to increase the size of the check box and the check mark