Hey, I'm new here so sorry if something about my report is wrong.
When I define the "Change" event for the RadzenTabs , the tab doesn't change anymore, although the index returned is ok. Basically UI doesn't change to the one related to the new tab and the new tab doesnt get selected.
I am having the same issue as well. I have defined a method, SelectedTabChanged(int Index), but when I select another tab the end result is no tab is selected. When setting a break point on the SelectedTabChanged method it shows that the Radzen Tab component is calling the SelectedTabChanged method 3 times for every click. The Tab index property that's returned ends up being, for example if tab 2 is selected SlectedIndex:2, SelectedIndex:2 SelectedIndex:0. I have attached a short video of the event and result. Aside from defining the event, I have not adding anything else to any of the child components.