When the slider is placed inside a ScrollViewer and the scrollviewer is resized fast a "Layout cycle exception is thrown". The original scenario where we reproduce the exception is the following: SelectionStart, SelectionEnd, Minimum and Maximum of the Slider are bound to DateTime.Ticks via converter. Exception is not reproduced if you move the Mininum declaration in xaml before the Maximum. And same for SelectionStart = before SelectionEnd. We are closing this item due to the workaround and the fact that it is NOT reproducible in WPF. If your scenario is different, please open a new support thread with more information regarding this exception.