Firstly, I'd like to express my gratitude to you for making something like this possible. I haven't played the first Kingdom Hearts in years, and it's really, really nice to be able to do so with revamped abilities and such.
However, there are a few issues I've encountered with the newest patch:
1. Some rare Heartless (notably the ones exclusive to Final Mix) are not spawning for me. While I can encounter Sniperwilds at a fairly high rate at Traverse Town, the Gigas Shadows in Neverland and the Pot Scorpion in Agrabah do not spawn. Furthermore, instead of the normal Heartless spawning in their place, no spawns occur at all. If I exit and reenter the room immediately, normal Heartless spawn. This is disappointing for me, as I really wanted to get the Encounter Up ability and complete the synthesis shop. 1.5. When the Heartless do not spawn in the Bizarre Room, a strange glitch occurs where the sleeping doorknob simply does not exist; where the object itself covers the keyhole is now nothing, thus rendering the keyhole itself visible. This is as strange as it sounds.
2. A more important glitch occurs right after the cutscene with Kairi in the Secret Waterway of Traverse Town. The cutscene ends, I receive the Oathkeeper, and... I get dumped into the Final Door area of the End of the World.
Music plays, I'm with Donald and Goofy, and there is absolutely nothing to do in the area itself. I can literally walk through the Door to Darkness to the other side. Unfortunately, I can't really complete the game this way.
I hope you consider fixing these bugs in the future, and thank you for all your hard work.