I don’t think you’re seeing the same problem I was posting about. In my whitelist I could see all my subscribed plugins listed with true; except for the problem plugin which instead had a list of modules modules. My new module was not in that list, so I couldn’t see it.
If the module you need just says true, then all the plugins should be visible.
However I will say that using the add all button didn’t help me to sort the problem. I had to go to the plugins page and then unsubscribe/subscribe.