Fix FlipView SelectionChanged event firing twice #4054
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The SelectionChanged event is a bubbling event, so if the ListBox inside the FlipView fires the event, all other events in the same container will be fired.
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Describe the changes you have made to improve this project
The SelectionChanged event is a bubbling event, so if the ListBox inside the FlipView fires the event, all other events in the same container will be fired. To fix this we check this inside the FlipView now and stop the bubbling.
Closed Issues
Closes #4012