Add-ODItem fails with "Upload error: Forbidden" when uploading a shared file with "Can edit" access

[sba923]

I'm able to download a file that's shared with me with "Can edit" permission by someone else (OneDrive personal) using:

PS> $p=Get-ODSharedItems -AccessToken $auth.access_token | ? { $_.Name -eq 'foo.bar' }
# 'get-oditem -AccessToken $auth.access_token -ElementId $p.id -DriveId $p.remoteItem.parentReference.driveId' fails with 'Get-ODWebContent: Cannot access the api. Webrequest return code is: NotFound '
PS> iwr $p.'@content.downloadUrl' -OutFile c:/tmp/foo.bar

But I can't upload the file once I have modified it:

PS> add-oditem -AccessToken $auth.access_token -LocalFile C:\tmp\foo.bar -DriveId $p.parentReference.driveId -ElementId $p.id                    
Add-ODItem: Upload error: Forbidden

Limitation, bug, or am I am just using the module incorrectly?