Export-GSSheet gets things mixed up when object properties aren't in the same order

[FISHMANPET]

Describe the bug Take this sample code:

$thing1 = [pscustomobject]@{
    thing1 = 'thing'
    thing2 = 'thing again'
}

$thing2 = [pscustomobject]@{
    thing2 = 'thing the third'
    thing1 = 'criss cross'
}

$things = @(
    $thing1
    $thing2
)

Export-GSSheet -SpreadsheetId $sheetid -Array $things -SheetName $sheetname

When printing $things to the terminal, Powershell can figure out that the objects are in a different order, but still display the object properly:

thing1      thing2
------      ------
thing       thing again
criss cross thing the third

Exporting that object to CSV with Export-CSV also properly puts criss cross in the first column.

However, Export-GSSheet gets confused and puts thing the third in the thing1 column and criss cross in the thing2 column.

Expected behavior criss cross should show up under thing1 not thing2