final fantasy VI eve of darkness problem

Hmm that hack doesn't seem to exist anywhere anymore for me to see what you're describing. It's been finished for years though, so I'd say the creator (who shall go unnamed) probably never fixed that or cared enough to fix it, or probably since it is more or less a glorified boss hack that I believe comes with a save to use, it's not supposed to be played from the beginning.

Anyways we don't host that hack here and the person behind it is no longer here either. No offense to Lord Envoy who somehow had the privilege of being co-creator along with he who shall go unnamed lol...

I suppose you could ask him over youtube: https://www.youtube.com/watch?v=pUfLXWETBfw&fmt=22
But honestly it's not worth the trouble, it's a finished old hack and I'm pretty sure it's not a complete hack to play from the beginning and might just have some issues like that if one were to do so.