Seems to be caused by the new enter/leave model added with the patches 5e48f5e2dd2dec7cfd1fa40b61e25123dfca515e through to 3e6da1636093d7dc98baac40544c0b0fb7fd8aec.
Making this a 1.6 blocker.
Seems to be caused by the new enter/leave model added with the patches 5e48f5e2dd2dec7 cfd1fa40b61e251 23dfca515e through to 3e6da1636093d7d c98baac40544c0b 0fb7fd8aec.
Making this a 1.6 blocker.