In certain situations, the RadTabView cuts off part of the header text for some of the headers. A specific scenario where this is happening is when the following tabs are present:
The problem is worse when the BorderThickness of the TabViewHeaderItem is set to 1
<Grid>
<telerik:RadTabView>
<telerik:RadTabView.HeaderItemStyle>
<Style TargetType="telerik:TabViewHeaderItem">
<Setter Property="BorderColor"
Value="Black" />
<Setter Property="BorderThickness"
Value="1" />
</Style>
</telerik:RadTabView.HeaderItemStyle>
<telerik:TabViewItem HeaderText="General" />
<telerik:TabViewItem HeaderText="Feed" />
<telerik:TabViewItem HeaderText="Users (0)" />
<telerik:TabViewItem HeaderText="Relationships (0)" />
<telerik:TabViewItem HeaderText="Tickets (0)" />
<telerik:TabViewItem HeaderText="Attachments (0)" />
</telerik:RadTabView>
</Grid>