Drop Down Selection not Storing in Exensions Module


I am using FreePBX 12.0.52 Distro. I have setup my server for TLS / SRTP.
I have created 3 Certificates with the Certificate Manager. (asterisk ext1 and ext2)
When I create the extension and I go to select which certificate I want to use, Under DTLS >> Use Certificate >> the drop down list is populated. I select the appropriate certificate for the extension, Submit, Apply.

When I go to the extension to see the settings. The certificate it shows as set is not the one that was chosen for the extension.

Is this normal or is this a bug?