SSL certificate thumbprint ignored


I have a couple of Site Bindings configured in my “Deploy website” step. Some of them are SSL and I have specified two different certificates using the field “SSL certificate thumbprint”.
But it seems like the bindings are just set up using the first certificate in the dropdown that I get when I try to configure them manually.

Is this a known bug? Or am I using the feature in the wrong way?

I am using the thumbprint that I see when I look at the details of the certificate.

Octopus v. 3.4.13

Sorry! Just found out what I did wrong.
I specified two certificates on same iis without specifying two ip-adresses. Now it works.