HCW Error when configuring the mail flow

Just got off the phone with Microsoft Support.  They informed me that they are aware of the problem and stated that a "small amount" of customers have reported this problem and do not have an ETA for the resolution.  

Adding to this, today I was attempting to setup SMTP relay with on-premises organization to Office 365. and experienced the exact same error seen with the HCW when setting up the connector within Office 365.  Only this time I was simply setting up a SMTP relay connector.

 As we all know, the process of setting up SMTP relay with Office 365 tenant is a VERY easy process, and to make things even easier, this article walks you through the steps to a tee (How to set up a multifunction device or application to send email using Office 365 - https://support.office.com/en-us/article/How-to-set-up-a-multifunction-device-or-application-to-send-email-using-Office-365-69f58e99-c550-4274-ad18-c805d654b4c4).

So the problem is not only affecting Hybrid Deployments/Environments.  It is affecting tenants who attempt to setup/configure connectors in the EAC.  My tenante today is currently NOT in a hybrid configuration.  Simply, the problem is within the Office 365 EAC > Mail Flow > Connectors.  Whether you are performing a new-inboundconnector command VIA the HCW, or simply trying to setup a SMTP relay connector, you will receive the following "generic" error:

error
Parameter count mismatch.