Hello, I was researching this critical hit issue and found this topic. If those who have investigated this bug are able, I have a couple of questions related more to playing the game without any fix for this bug. Also possibly worth saying is I'm actually looking at this on the Final Fantasy Chronicles port of FF4, not SNES or GBA.
Due to the auto-battle aspect of the bug, am I correct in concluding that Rydia will never be able to cause critical hits after the Tellah vs Bard auto-battle, since she can obviously never be in Tellah's slot for that battle? And that due to Edge vs. Rubicant auto-battle, only one character out of Cecil, Kain, Rosa, and Rydia* can keep their criticals? Thus, for an endgame party, only Edge and one other person could possibly have critical hits still enabled?
Second, which byte(s) exactly in character data is the one that is permanently affected by this? It seems like it is 102D and 102E that get zeroed by the dead-entering-battle effect, so are those the permanent data that are affected by this glitch?
Finally, does anyone have a convenient list of each character's actual starting critical rate for the byte(s) affected by the glitch? (Bonus question: outside of this glitch, do these permanent data on the character's base critical rate ever change?)
Any help would be much appreciated.