Here is a REPL test page. If the user navigates forwards and backwards via the Wizard buttons, the TreeView checkboxes persist their state. If the user navigates via the Stepper, the checkbox state is not retained.

The issue is triggered by the TabStrip.

A possible workaround is to prevent Stepper clicks with CSS:

.k-tabstrip .k-wizard .k-stepper .k-step {
  pointer-events: none;
}

Greetings.

I think I found a minor bug when using the TabStrip component. If you have something like this:

<TelerikTabStrip>
	<TabStripTab Title="First tab">
		<p>First content</p>
	</TabStripTab>
	<TabStripTab Title="Second tab">
		<p>Second content</p>
	</TabStripTab>
	<TabStripTab Title="Third tab">
		
	</TabStripTab>
 </TelerikTabStrip>

And you click the tab without content, it stays selected.

Regards

We have recently update to version 7.0.0 of Telerik for Blazor controls.
We have also access to Progress ThemeBuilder application which we use to customize the default Material theme.

After the update to version 7 and also upgrading and compiling the new theme file for our application, TabStrip items fail to display the correct css and defaults to the theme's original css.

ThemeBuilder produces rules for the tab item items with the following path

.lvs-tabstrip.k-tabstrip .k-tabstrip-items-wrapper .k-tabstrip-items.k-reset.k-tabstrip-items-start .k-item.k-tabstrip-item

where the actual control generates the following

.lvs-tabstrip.k-tabstrip .k-tabstrip-items-wrapper .k-tabstrip-items.k-reset.k-tabstrip-items-start .k-item

As you can see it is missing the k-tabstrip-item class and the custom theme fails to render correctly. Either Telerik blazor libary did not add this extra class to each tab item or theme builder is inserting this class when it should not. 

I can place this extra class on each TabStripTab element on its Class property, but I feel this is something that the actual Telerik for Blazor libray should do.

Looking at the source code of Telerik for Blazor library, the TabStipTab component generates add the k-item as default and then applies the value of property ClassToRender and its value is 

$"{ActiveCssClass} {DisabledCssClass} {Class} {FirstItemClass} {LastItemClass}".Trim()

The Class is an empty string, which I currently use to "fix" the problem but I certainly would like a better solution like a real fix :) 

Thank you telerik team

When clicking on a tab to drag it to reorder, it will process the tab change as soon as the tab is clicked to start a drag operation.  Preferably, we'd like the tab select action to only happen on a mouseup instead of a mousedown (and cancelled on drag.)  This is a reproduction in the REPL: https://blazorrepl.telerik.com/mAayPpGb59GjWvUT47.  But it so simple that you probably don't need it. This is the main razor file: