Windows Sandbox Configuration - SandboxFolder

Hey guys,

since there is actually very little information on the Windows Sandbox, other than very basic tutorials, I'm stuck with this problem:
When I try to share a folder into the sandbox and I specify a Sandbox Folder, the files should be shared to, no folder is created.
Or rather, the files get copied to the Desktop (which is the default, when no SandboxFolder element was specified).

This is what my .wsb file looks like:

Code:

<Configuration>
    <MappedFolders>
        <MappedFolder>
		<HostFolder>C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories</HostFolder>
		<SandboxFolder> C:\Users\WDAGUtilityAccount\Desktop\common\software</SandboxFolder>
            <ReadOnly>false</ReadOnly>
        </MappedFolder>
    </MappedFolders>
</Configuration>

I have tried using different folders, changing the order of the folder tags, but nothing does the trick.
Is anybody else experiencing this?
Am I doing something wrong?

EDIT: Im on version 1903