My plugins goal is to create an infinite dungeon via world generation. Using the setBlock method in a ChunkGenerator.ChunkData object to place a chest in the world causes the chest to appear invisible until interacted with. Hovering over the position where the chest is supposed to be results in the usual outline being show, but the chest still invisible.

Placing a block nearby the chest does not reveal the chest. Attaching a chest to the side (merging the chests) will show both sides of the newly made double chest. I have attached 2 pictures (before i right click on the chest and after), the plugin jar file, and the plugin source.