Plus, you are interpreting whether or not a decision was even made. Maybe it was an implementation detail that leaked out, or maybe the decision is still left as a TODO in the backlog somewhere.
If there wasn't an intentional design decision, then who knows if the behavior you try to document lasts beyond the current version, who knows how quickly that documentation is out of date. (Likely if a project doesn't care about documentation before you arrive, they might not likely care about stale documentation either.)
If there wasn't an intentional design decision, then who knows if the behavior you try to document lasts beyond the current version, who knows how quickly that documentation is out of date. (Likely if a project doesn't care about documentation before you arrive, they might not likely care about stale documentation either.)