EntrySelectedBy in CustomControls do not pass on the current object to expressions

[SeeminglyScience]

Steps to reproduce

$text = '<?xml version="1.0" encoding="UTF-8" ?>
<Configuration>
    <Controls>
        <Control>
            <Name>MyTestControl</Name>
            <CustomControl>
                <CustomEntries>
                    <CustomEntry>
                        <EntrySelectedBy>
                            <SelectionCondition>
                                <TypeName>MyTestObject</TypeName>
                                <PropertyName>MyProperty</PropertyName>
                            </SelectionCondition>
                        </EntrySelectedBy>
                        <CustomItem>
                            <Text>Selection successful</Text>
                        </CustomItem>
                    </CustomEntry>
                    <CustomEntry>
                        <CustomItem>
                            <Text>Default was picked</Text>
                        </CustomItem>
                    </CustomEntry>
                </CustomEntries>
            </CustomControl>
        </Control>
    </Controls>
    <ViewDefinitions>
        <View>
            <Name>DefaultView</Name>
            <ViewSelectedBy>
                <TypeName>MyTestObject</TypeName>
            </ViewSelectedBy>
            <GroupBy>
                <PropertyName>MyProperty</PropertyName>
                <CustomControlName>MyTestControl</CustomControlName>
            </GroupBy>
            <TableControl>
                <TableHeaders>
                    <TableColumnHeader />
                </TableHeaders>
                <TableRowEntries>
                    <TableRowEntry>
                        <TableColumnItems>
                            <TableColumnItem>
                                <PropertyName>Name</PropertyName>
                            </TableColumnItem>
                        </TableColumnItems>
                    </TableRowEntry>
                </TableRowEntries>
            </TableControl>
        </View>
    </ViewDefinitions>
</Configuration>'

Set-Content $env:TEMP\test.format.ps1xml -Value $text -Force
Update-FormatData -AppendPath $env:TEMP\test.format.ps1xml

[PSCustomObject]@{
    PSTypeName = 'MyTestObject'
    MyProperty = 'testing'
    Name = 'testing'
}

Expected behavior

Selection successful

Name
----
testing

Actual behavior

format-default : Object reference not set to an instance of an object.
    + CategoryInfo          : NotSpecified: (:) [format-default], NullReferenceException
    + FullyQualifiedErrorId : System.NullReferenceException,Microsoft.PowerShell.Commands.FormatDefaultCommand

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      6.1.0
PSEdition                      Core
GitCommitId                    6.1.0
OS                             Microsoft Windows 10.0.16299
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Additional Information

This works as expected after changing this line to this:

if (match.PerfectMatch(new TypeMatchItem(x, x.appliesTo, so)))