I read several answers about "Is it better to develop your own theme from scratch or extend a existing one?".
Here is my situation: I just got an existing project and I have to debug it and evolve it. I'm in the audit phase and I was wondering if, in a theme developed from scratch, you forgot to provide the code for render some elements, are they going to stay hidden?
The specific case in this project is the absence of drupal status messages. They never appear. I guess there are plenty of them that are generated by the core, like when you fail at login or something. But they just don't happen.
It is very problematic and I want to fix that.
Is that because developers forgot to render them manually somewhere?
Thanks in advance