I've noticed that a lot of texture artists have been having difficulty with their chests having a strange flicker on the rim of the body. This odd flickering effect doesn't happen with the default textures, so it seemed unlikely that it was a bug.
After looking around at the files and playing with the chests in-game, I realized what the problem was. The lid of the chest now intersects with the body of the chest on one pixel. If you look at the textures, you should notice that the bottom row of pixels on the chest lid is identical to the top row of pixels on the chest body.
All you have to do is make sure that these two rows of pixels are identical in your textures, and nothing will flicker.
Matonk already mentioned this on the Union thread (which is how I knew to make the pixels the same on the body and lid for my packs :3) but I'll give you a +1 anyway for being helpful and awesome. :biggrin.gif: