Hi, this problem happens when you have no patience...
Well, to solve it, you should open the content type, go to the config of all your clients, specially site, intro and content, then select the template you need, joombla_17 solved it for me. Then save.
Some times, I needed to save the changes in every client... in other words...
select client site, change the template and save... then go to content, change the template ans save... then go to... and so on...
Well, to avoid having this problem, do not change from one client to another without the first one has been fully displayed, let me explain.
When you open a content type you have to wait a few seconds to the fields to be rendered, if you are on admin, but need to work on site, you will probably want to change without waiting for the fields on admin to be rendered as you are not going to need them.
Well, don't do it. Wait and you will have no problems any more.
I had that problem in RC2 when I first started to use seblod, now I wait and the problem has been gone for several months now.
I hope it helps.
Bye, Daniel.