@Oliver, to speak to your original question above, "Yes, our in-house compilation is a 'build of just the open-vmware-tools source without Debian package scripts'" That build doesn't appear to have that PrivateTmp in the unit file.
So far, testing looks good with 'PrivateTmp=False'. I'm going to run one more test through for verification before confirming this resolves the issue.
@Oliver, to speak to your original question above, "Yes, our in-house compilation is a 'build of just the open-vmware-tools source without Debian package scripts'" That build doesn't appear to have that PrivateTmp in the unit file.
So far, testing looks good with 'PrivateTmp=False'. I'm going to run one more test through for verification before confirming this resolves the issue.