At least for C++ there is something called defect reports. When agreed, those defect reports to retroactively applied to previously published C++ standards. As

At least for C++ there is something called defect reports. When agreed, those defect reports to retroactively applied to previously published C++ standards. As a random example for something as fundamental as classes in C++, the page https://en.cppreference.com/w/cpp/language/classes https://en.cppreference.com/w/cpp/language/classes shows ten defect reports.