Hey there, love the hack! I'd report a bug I was encountering with a newly-updated save, but it's a little complicated lol. We'll start with what I had: a save in 7.38 up to Lilycove. I updated the 7.38 rom to 7.4, which seems to run fine (from the minimal testing I've tried).
The bug comes in the Lilycove Department Store. On the 2nd and 3rd floors, talking to the vendors instead gives me a Pokeblock case (and a hardlock immediately after) and some berry interactions, such as watering, planting, and picking. On the 4th floor, the left clerk sells the TMs as normal, but the right clerk has the interact sound when I press A, but nothing else. 5th floor and up work fine.
I thought that maybe it was an issue with patching an already-patched rom, so I patched a vanilla Emerald rom. In this, the stores seem to work fine, but they don't include the Event Tickets that were in 7.38. Maybe these were changed in 7.4 to only appear after certain events or something? If that's the case, then it seems I've made this post for nothing lol. Sorry about that. I don't want to be missing out on features.
One last thing, unrelated to the previous bug. Idk if you're still working on that Bad Egg problem, and idk if this would even help, but at one point I tried editing a pokemon that had a Gen 4 move in A-Save, and it came back as Bad Egg. So maybe the Bad Eggs in the boxes are a result of Gen 4 moves or abilities or something? Might be a lead on the issue, just to see if I could help. Of course I can't actually make a bad egg appear in-game, but ya know. Thought I'd share.
Anyway, it was a long post that might not even have an issue, but I'll be darned if I make an account and don't post about things I've found lol. Thanks again for the hack, it's great stuff!