[BUG] - Add-PnPPageImageWebPart inside a loop corrupts pages

Reporting an Issue or Missing Feature

Add-PnPPageImageWebPart causes pages to corrupt (revert to base sharepoint page with webparts and then users are unable to edit them in the UI) if it is part of a loop that adds components to the page.
This does not happen if you run it out of the context of the loop and it does not happen if you re-fetch the page context before running the line.

Expected behavior

Add-PnPPageImageWebPart should just add an image to the page just like Add-PnPPageTextPart or Add-PnPPageWebPart

Actual behavior

After running the Add-PnPPageImageWebPart line in the script, the page reverts to some built-in sharepoint home page and loses all modifications done to it. sharepoint does not let users edit the page saying something went wrong and to try again.

Steps to reproduce behavior

$existingpage = get-pnppage -Identity $targetPageName -Connection $webConnection
$global:pageContentArray = @()
$global:pageContentArray += @{
"Type" = "Section"
"Layout" = [PnP.Core.Model.SharePoint.CanvasSectionTemplate]::TwoColumnLeft
"Order" = 1
}
$global:pageContentArray += @{
"Type" = "Text"
"HTML" = "

sample

"
"Section" = 1
"Column" = 1
}
$global:pageContentArray += @{
"Type" = "Text"
"HTML" = "

another sample

"
"Section" = 1
"Column" = 1
}
$global:pageContentArray += @{
"Type" = "Image"
"ImageUrl" = "/sites/mysite/mylibrary/image.jpg"
"Section" = 1
"Column" = 1
}

foreach ($contentItem in $global:pageContentArray) {
try {
switch ($contentItem.Type) {

                "Section" {
                    $null = Add-PnPPageSection -Page $existingPage -SectionTemplate $contentItem.Layout -Connection $webconnection -Order $contentItem.Order
                }
                "Image" {
                    $null = Add-PnPPageImageWebPart -Page $existingPage -ImageUrl $contentItem.ImageUrl -Connection $webConnection # -Section $contentItem.Section -Column $contentItem.Column 
                }
                "Text" {
                    $content = $contentItem.HTML
                    $null = Add-PnPPageTextPart -Connection $webConnection -Page $existingPage -Text $content -Section $contentItem.Section -column $contentItem.Column
                }
                
            
            }
        }
        catch {
            write-host "Failed to add page component"
            Get-PnPException
        }
    }

IMPORTANT NOTE!
this issue is resolved if you put
$existingpage = get-pnppage -Identity $targetPageName -Connection $webConnection
before the Add-PnPPageImageWebPart line. This slows down the script as there is now an extra call to re-fetch the page.

What is the version of the Cmdlet module you are running?

2.99.54

Which operating system/environment are you running PnP PowerShell on?

• [ X] Windows
• Linux
• MacOS
• Azure Cloud Shell
• Azure Functions
• Other : please specify

Start by reproducing the script using Add-PnPPageSection, Add-PnPPageTextPart, and Add-PnPPageImageWebPart in PnP PowerShell 2.99.54, then compare behavior with and without refetching $existingPage. Done means adding the image inside the loop no longer corrupts the page, removes its modifications, or prevents editing in SharePoint.