Xamarin.Forms stepper is showing only minus button on android - xamarin.forms

Question

This only shows minus option on the stepper. Why the plus option is not visible? The stepper works just fine on iOS.
<Entry Text="{Binding Path=Quantity, Mode=TwoWay}" Grid.Column="1" Grid.Row="1"></Entry>
<Stepper Value="{Binding Path=Quantity, Mode=TwoWay}"
Grid.Column="2"
Grid.Row="1"
MinimumWidthRequest="200"></Stepper>

Answer 1

I have tried shared code in my Grid , it works .
<Grid VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition Height="400" />
<RowDefinition Height="100" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Entry Text="{Binding Path=Quantity, Mode=TwoWay}"
Grid.Column="0"
Grid.Row="0"></Entry>
<Stepper Value="{Binding Path=Quantity, Mode=TwoWay}"
Grid.Column="1"
Grid.Row="0"
MinimumWidthRequest="200"></Stepper>
<BoxView Grid.Row="1"
Grid.Column="0"
BackgroundColor="Red" />
<Button Grid.Row="2"
Grid.Column="0"
BackgroundColor="Yellow"
Clicked="Button_Clicked" />
</Grid>
The effects :
If you have a doubt about MinimumWidthRequest , it can be affected by Layout . If using it in StackLayout , then it will work , however in Grid can not .
<StackLayout Orientation="Horizontal" VerticalOptions="Start">
<Label Text="Welcome to Xamarin.Forms!"
VerticalOptions="CenterAndExpand"
HorizontalOptions="CenterAndExpand" />
<Entry Text="{Binding Path=Quantity, Mode=TwoWay}" Placeholder="123456789" MinimumWidthRequest="5"
></Entry>
<Stepper Value="{Binding Path=Quantity, Mode=TwoWay}"
MinimumWidthRequest="1"></Stepper>
</StackLayout>
The effects :
In addition , from Remarks of MinimumWidthRequest :
This causes overflow handling to shrink this element to its minimum width before elements who do not have a minimum size set.
I think it just be used to shrink the element , if the element not be supported the limit size , then it will not work .Here Stepper is not recommended for using MinimumWidthRequest. If works, it will cause it to appear asymmetric.