Ah, yeah, I had completely forgotten about the bubble being there. Zyrthofar's viewer is nice, but it's not 100% perfect yet, and it does get some of the sprites and palettes wrong (plus fails in general when dealing with the 4BPP graphics). I didn't even think about that tile being the only one of its kind, I should have too, since I had the entire tileset in front of me.
Heh, good news about your editors getting updated. I'm kind of sitting on the fence here, part of me really wants to port my enhancement hack over to FF4 Advance, and part of me knows there's a lot more I can do with the SNES version. I suppose I could make two separate hacks, but I don't think I could find the motivation for that.