Changing resolutions in a level with a translucent textured background may make your JJ2 crash.

Using more than four animations in a 1020 tile tileset doesn't always make my JJ2 crash like I would expect it to. I feel somewhat deceived. But don't add extra animations because EvilMike warns against it.

Technically, animated tiles can be added to Layer 8 while using a textured background. Just not how you would expect it to work.

You can place Warp Target events on any tile of a level and it will still work. That's not really a bug as much it is a useless fact. The last one isn't much of a bug either. Nor is the second one. I didn't feel like reviving the DYK thread in any case.