I had the same "problem" the very first time I tried C::B, but after having done some tests to understand how it works, I understood the C::B behaviour quickly.
![Cheesy :D](https://forums.codeblocks.org/Smileys/default/cheesy.gif)
Nevertheless, when I create a C/C++ file, the default is that Release/Debug checkbox are unchecked, and I should prefer them to be checked. But it's just my preference, not a real problem.