When connecting to Jenkins using GitHub OAuth, there is a significant delay before information about the groups to which the user belongs comes back down.  
We can make sure by consulting the whoAmI page.  
There may be a wait of up to 1 minute before the information is actually sent down.  

2 problems arise from this :

• Links from /static-files/ return a 403 exception (same as JENKINS-63296)
• Build launches generate a "could not be located" exception (same as JENKINS-67026)

This is extremely penalizing for us