if i dont use a fix width or height like below. buttons:SfSegmentedControl is not displayed correctly in the latest version 16.4.0.53. it works in earlier versions just fine.
<buttons:SfSegmentedControl VerticalOptions="Fill" SelectionChanged="segmentedControl_SelectionChanged" SelectedIndex="{Binding SelectedDatetype, Mode=OneWay}"
x:Name="segmentedControl" Margin="10,10,10,0" CornerRadius="15" BorderColor="#048EAC" DisplayMode="Text"
VisibleSegmentsCount="4" FontColor="Black" HorizontalOptions="Center" ItemsSource="{Binding Datetypes}" Color="{OnIdiom Phone=#048EAC, Tablet=#048EAC, Default=White}" SelectionTextColor="{OnIdiom Phone=White, Tablet=White, Default=Black}">
<buttons:SfSegmentedControl.SelectionIndicatorSettings>
<buttons:SelectionIndicatorSettings
Position="Fill">
</buttons:SelectionIndicatorSettings>
</buttons:SfSegmentedControl.SelectionIndicatorSettings>
</buttons:SfSegmentedControl>