Unable to perform any action when user is not on full admin role

Hello,

I have a vOneCloud instalation with OpenNebula 6.8 and when I connect to the vCenter server it connects with an error state if user is with only the permissions said on the docs(vCenter Node Installation — OpenNebula 6.8.3 documentation)
The only way I was able to perform ANY action is when I set the user to be a full admin of the vCenter.
Is this a bug? Am I missing something? What information can I add to this to help me solve the problem?