Large azalea trees will generate completely randomly in the same seed. Note that unlike MC-55596, large azalea trees have no chance of ever generating in the same position, regardless of the order that chunks are loaded. This also poses a gameplay issue as azaleas are used to locate caves.

To reproduce:

1. Use the seed -1154073997101154041
2. Look for an azalea tree near spawn, if there is one, and copy its coordinates
3. Create a new world using the seed -1154073997101154041 (do this even if you couldn't find an azalea tree in the previous world)

 The azaleas will generate in different places. Keep creating new worlds with the seed -1154073997101154041 and notice that the large azaleas will generate completely randomly.