ProjectSkyfire/SkyFireEMU_rebase — comment on commit 899a0cff0a3bb90ba8259e112ff66d49de6820c8
File: src/server/game/Entities/Object/Updates/UpdateFields.h line 516
By cmaranec:

size of CONTAINER_FIELD_SLOT is not 1 byte (and then CONTAINER_END cannot be moved by 1 byte), needs research. On 4.0.6a it was 72 bytes, so offset ITEM_END + 0x4A