我在xamarin.forms 4.0中面临标签剪切问题。在我的listview中使用数据模板并绑定视图模型中的数据。如果我对模型对象进行文本动态更改，则会剪切标签文本。在升级到xamarin.forms 4.0之前，相同的代码工作正常。
尝试了不同的HorizontalOption值，更改了网格和堆栈等布局，但没有成功。
在下图中，“完成百分比”标签在几个项目上剪切，末尾带有省略号。
示例代码可在此处找到DataTemplateTest

XAML代码：

<StackLayout>
 <ListView HasUnevenRows="True" ItemsSource="{Binding Courses}" 
      CachingStrategy="RecycleElementAndDataTemplate">
         <ListView.ItemTemplate>
             <DataTemplate>
                 <local:CourseViewCell></local:CourseViewCell>                    
             </DataTemplate>
         </ListView.ItemTemplate>
     </ListView>
 </StackLayout>

CourseViewCell:

<ViewCell.View>


<Grid.RowDefinitions>





</Grid.RowDefinitions>

         </Label>

         <Label x:Name="CategoryName"
                Grid.Row="2"
                Text="{Binding CategoryName}"
                FontSize="Small"
                FontAttributes="None"
                TextColor="Black"
                HorizontalOptions="Fill"
                Margin="15,0,10,0"
                LineBreakMode="TailTruncation" />

         <StackLayout Orientation="Horizontal"
                      Grid.Row="3"
                      HorizontalOptions="Fill"
                      Margin="5,5,10,0">
             <Label  Text="{Binding CompletionPercentage, Converter={StaticResource PercentageToText}}"
                     FontSize="Micro"
                     FontAttributes="None"
                     TextColor="Black"
                     HorizontalOptions="EndAndExpand"
                     HorizontalTextAlignment="End"
                     VerticalOptions="Center"
                     LineBreakMode="TailTruncation" />
         </StackLayout>

         <StackLayout Grid.Row="4"
                      Margin="0,12,0,0"
                      x:Name="ProgressStack"
                      HeightRequest="8"
                      Spacing="0"
                      Padding="0"
                      VerticalOptions="StartAndExpand"
                      HorizontalOptions="FillAndExpand"
                      IsClippedToBounds="True"
                      BackgroundColor="Black">
         </StackLayout>

     </Grid>
 </Frame>

</ViewCell.View>

ViewModel:

public class MainViewModel : BaseModel
{
public MainViewModel()
{
ObservableCollection courseList = new ObservableCollection();

     for (int i = 0; i < 100; i++)
     {
         Course course = new Course()
         {
             CourseName = "Course " + i,
             CategoryName = "category " + i,
             CompletionPercentage = i,
             CourseImage = "https://thumbs-prod.si-cdn.com/qXrJJ-l_jMrQbARjnToD0fi-Tsg=/800x600/filters:no_upscale()/https://public-media.si-cdn.com/filer/d6/93/d6939718-4e41-44a8-a8f3-d13648d2bcd0/c3npbx.jpg"
         };

         courseList.Add(course);
     }

     this.Courses = courseList;
 }

 private ObservableCollection<Course> courses;
 public ObservableCollection<Course> Courses
 {
     get => this.courses;
     set
     {
         this.courses = value;
         this.RaisePropertyChanged("Courses");
     }
 }

}