Error SSL Certificate is required

Steps to duplicate for GroupWise 18 running on Windows 2016 server:

1) Create an LDAP server of Active Directory Type and plug in all the details. 
2) Select the SSL Tickbox and upload a certificate. 
3) Click Okay. 
4) Later, go back in and everything looks fine. 
5) Click the "View" magnifying glass and see the Certificate details. 
6) Click Okay, and get the error: "* SSL Certificate is Required." 
7) It appears that even though the certificate is there, it doesn't recognize it when hitting okay (Like for example, if you went in to add a description or change any of the details. 
8) Despite that error, you can still view the certificate and confirm it's there. The dialog just loses it.