Binding doesn't work consistently in XAML

<Thickness x:Key="CommonBorderThickness">2</Thickness>
<Style x:Key="CommonButtonStyle" TargetType="Button">
...
   <Setter Property="BorderThickness" Value="2" />
...
   <Setter Property="Template">
               <Setter.Value>
                   <ControlTemplate TargetType="Button">
...
                         <Border Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="0" Grid.RowSpan="2"

BorderThickness="{Binding Source={StaticResource CommonBorderThickness}, Converter={StaticResource FourGroupSizeConverter}}"

BorderThickness="{TemplateBinding BorderThickness, Converter={StaticResource FourGroupSizeConverter}}"
BorderThickness="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource FourGroupSizeConverter}}" 

<ControlTemplate x:Name="CommonButtonControlTemplate" TargetType="Button">
    <Grid>
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
                <VisualState x:Name="Normal" />
                <VisualState x:Name="Disabled">
                    <Storyboard>
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBackground" Storyboard.TargetProperty="Color" To="DimGray" />
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBorderBrush" Storyboard.TargetProperty="Color" To="Gray" />
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="MouseOver">
                    <Storyboard>
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBackground" Storyboard.TargetProperty="Color" To="Red" />
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBorderBrush" Storyboard.TargetProperty="Color" To="Lime" />
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="Pressed">
                    <Storyboard>
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBackground" Storyboard.TargetProperty="Color" To="Red" />
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBorderBrush" Storyboard.TargetProperty="Color" To="Lime" />
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="FocusStates">
                <VisualState x:Name="Focused">
                    <Storyboard>
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBackground" Storyboard.TargetProperty="Color" To="Red" />
                        <ColorAnimation Duration="0" Storyboard.TargetName="ButtonBorderBrush" Storyboard.TargetProperty="Color" To="Lime" />
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="Unfocused" />
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="20*" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="18*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Border Grid.Column="1" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="2" BorderBrush="Black" removed="Black" Opacity="0.3"
                                BorderThickness="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource FourGroupSizeConverter},
                                FallbackValue={Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness}}"
                                CornerRadius="{Binding Source={StaticResource CornerRadius}, Converter={StaticResource FourGroupSizeConverter},
                                FallbackValue={StaticResource CornerRadius}}" />
        <Border Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="0" Grid.RowSpan="2"
                                BorderThickness="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource FourGroupSizeConverter},
                                FallbackValue={Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness}}"
                                CornerRadius="{Binding Source={StaticResource CornerRadius}, Converter={StaticResource FourGroupSizeConverter},
                                FallbackValue={StaticResource CornerRadius}}">
            <Border.Background>
                <SolidColorBrush x:Name="ButtonBackground" Color="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Background}"/>
            </Border.Background>
            <Border.BorderBrush>
                <SolidColorBrush x:Name="ButtonBorderBrush" Color="{TemplateBinding BorderBrush}"/>
            </Border.BorderBrush>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="14*" />
                    <ColumnDefinition Width="14*" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="*" />
                    <RowDefinition Height="10*" />
                    <RowDefinition Height="10*" />
                    <RowDefinition Height="*" />
                </Grid.RowDefinitions>
                <Image Grid.Column="1" Grid.Row="1" Source="/Assets/en-ie/Common/pawprint.png" Margin="0,8,8,0" />
                <ContentPresenter Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="2">
                    <TextBlock Text="{TemplateBinding Content}" TextAlignment="Center"
                                    FontSize="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=FontSize, Converter={StaticResource SizeConverter},
                                    FallbackValue={Binding RelativeSource={RelativeSource TemplatedParent}, Path=FontSize}}" />
                </ContentPresenter>
            </Grid>
        </Border>
    </Grid>
</ControlTemplate>