Long-term discussion and bug reports are maintained via GitHub Discussions and Issues, while code review is managed via GitHub Pull Requests.
Please, (i) be sure that there are no existing issues/PR concerning the same bug or improvement before opening a new issue/PR; (ii) write a clear and concise description of what the bug/PR is about; (iii) specifying the list of steps to reproduce the behavior in addition to versions and other technical details is highly recommended.