In have today tried to update to sfTabView version 22.214.171.124 from version 126.96.36.199 and in my testing this latest version is fundamentally broken.
When using this release with version 3.4 of Xamarin Forms on Android I find that tab selection is completely broken. When I navigate to the second tab in a TabView, the content of the first tab is displayed again. When I navigate back to the first tab there is no content shown at all and no tab shows as selected. I have tab selection set via a bindable property and managed via a View Model.
As a separate note, when I upgraded to Xamarin Forms 3.5 and tested on iOS the sfTabView does not work at all. Navigation to the view containing the tab view just fails completely. Navigation works when the TabView has no items in its TabItemCollection.
I would say this release is fundamentally flawed.
When I revert all packages to version 188.8.131.52 with Xamarin.Forms 3.4 the application works as it did previously.
Confirmation that version 184.108.40.206 of sfTabView on Android with version 3.5 of Xamarin Forms is also a disaster. Navigating to the view which contains the sfTabView just results in a NullReferenceException. If the TabItemCollection is empty it looks like navigation will work.
DRDhanasekar R Syncfusion Team February 8, 2019 08:14 AM
We have already fixed this issue and this will be included in our upcoming weekly NuGet which will be rolled out on 12th February 2019.