If you highlight the colon / delimiter in a TimeSpanUpDown / DateTimeUpDown and spin via mouse wheel it throws an InvalidOperationException.
Community Edition v3.0
Comments: ** Comment from web user: BoucherS **
Community Edition v3.0
Comments: ** Comment from web user: BoucherS **
Same as issue https://wpftoolkit.codeplex.com/workitem/22446
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