SHARED_INVENTORY_SLOT_RESULT_REMOVED not fired on research

[@AlphaLemming]

function ZO_SharedInventoryManager:HandleSlotCreationOrUpdate(bagCache, bagId, slotIndex, isNewItem)
    local existingSlotData = bagCache[slotIndex]
    local slotData, result = self:CreateOrUpdateSlotData(existingSlotData, bagId, slotIndex, isNewItem)
    bagCache[slotIndex] = slotData
    if result == SHARED_INVENTORY_SLOT_RESULT_REMOVED then
        self:FireCallbacks("SlotRemoved", bagId, slotIndex, existingSlotData)
...

This callback is not fired, if a item is consumed by researching its trait, why? The item is removed...