RBAC - w3wp.exe Connection Leak detected

Hello,

I'm receiving this error on our Exchange 2013 server and was wondering if anybody has encountered it before, what is it caused by and what is the fix?

Log Name: Application
Source: MSExchange RBAC
Event ID: 74
Task Category: RBAC

(Process w3wp.exe, PID 11616) Connection leak detected for key domain.local/OU/User Accounts/Admin-Exchange in Microsoft.Exchange.Configuration.Authorization.WSManBudgetManager class. Leaked Value 1.

Cheers,

Rob