Not sure why this happens, I have tried a lot of versions with the same result. The Japanese virtual console is the best version of the game so why has this not been fixed yet?
This is a known issue. Why hasn't it been fixed yet? Because it happens to be difficult. People aren't just choosing not to fix it because they're lazy.
Or simply because no one is working on it. One good thing about open source is that anyone can work on the features/fixes they want. If you can't or don't want to, well, now you understand why it hasn't been fixed yet.