Right click on a playlist entry, click "open with parameters" --> "open (select credentials)...". After choosing the desired credentials to log in with, the server connection opens with default credentials (as if you double clicked on the entry).
Opening a RDP connection entry by selecting credentials, and you are logged in with the proper selected account.
This seems to be a bug in RDM. My ask is that either the feature be removed from the playlist menu or allow the functionality to work, when the option is present.
Using "Select Credentials" option on a playlist entry does not log you in with the desired account