The described behavior is observed because in our template there is SnapsToDevicePixels
set to True. Unfortunately this is needed to prevent the border from blurring.
That is why there are only two options:
- You need to re-template the RadMaskedTextInput control and remove this setting in its ControlTemplate
- or you need to remove its default border and use your own below the main control:
However I would suggest you to use a lighter red color for border brush to achieve the look that you need.
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