I think patching a game engine is fairly common in the industry. Games are not on a dependency update treadmill. They pick a version, and barring some external

I think patching a game engine is fairly common in the industry. Games are not on a dependency update treadmill. They pick a version, and barring some external crisis, there is no reason to upgrade anything ever. If there is one bug affecting rendering or speed from the underlying engine, it can be worth finding it yourself.