Grid layout issues with elements bigger than constraint size

After updating to newer Avalonia that has WPF Grid integrated some controls in my app started shifting content in a weird way. In the beginning I thought this may be how WPF Grid works, but same XAML works just fine in WPF (also this XAML can just be pasted into WPF or Avalonia, as it works in both).

<Grid Width="120" Height="120">

        <Border BorderBrush="#292e34" BorderThickness="1" Background="#494B4D" Margin="2">

            <Grid >
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>

                <DockPanel Grid.Row="0">

                    <Border>
                        <Border.Background>
                            <SolidColorBrush Color="Red" />
                        </Border.Background>
                        <Rectangle Width="16" Height="16" Fill="Blue" />
                    </Border>
                </DockPanel>

                <Rectangle Grid.Row="1" Height="1" Fill="#292e34" />

                <Border Grid.Row="2" Background="#494B4D" Padding="2">
                    <TextBlock HorizontalAlignment="Center" Text="Very very very very very very very long text" />
                </Border>

            </Grid>

        </Border>

    </Grid>

Avalonia:

WPF:

Any idea what might be going on there? Also if I add MaxWidth="112" to TextBlock it looks the same as WPF.

cc: @jmacato as you ported Grid from WPF

[jmacato]

@Abdulbaqi-Alshareef that’s a very helpful resource, thanks so much for linking that 😃

[jmacato]

I also think this would make a good unit test case so perhaps i could write that one later.