Growing a large jungle tree from a batch of more than 4 saplings will always spawn the tree in the same place

Steps to reproduce

• Create a batch of JUNGLE saplings (works nicely in a batch of 9)
• Apply bonemeal on the sapling in the centre
• Repeat this several times and observe where the tree spawns in relation to the other saplings

The 4 block trunk will always spawn on the same corner of the square of saplings