When setting LineBreakMode properties in Label inside the TreeView ItemTemplate, the properties are not respected.
<treeview:TreeViewDescriptor
ItemsSourcePath="Children"
TargetType="{x:Type models:Folder}">
<treeview:TreeViewDescriptor.ItemTemplate>
<DataTemplate>
<Grid ColumnDefinitions="Auto, *, Auto">
<Label
Grid.Column="0"
FontFamily="MaterialIcons"
FontSize="22.0"
Text="Folder"
TextColor="Peru"
VerticalOptions="Center" />
<Label
Grid.Column="1"
Margin="6.0,0.0"
LineBreakMode="TailTruncation"
Text="Item with loooooooooooooooong naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaammmmmmmmmmmmmmeeeeeeeeeeeeee"
VerticalOptions="Center" />
<Button Text=". . ."
Grid.Column="2"
BackgroundColor="Transparent"
WidthRequest="64.0">
</Button>
</Grid>
</DataTemplate>
</treeview:TreeViewDescriptor.ItemTemplate>
</treeview:TreeViewDescriptor>