Quantity field shows the quantity of the requested item in service portal view. This behavior is specific to Kingston release.
This is intended change in Kingston.
If this behavior is not desirable users can revert to the previous behavior seen in pre-Kingston releases where Quantity field does not show up on the ticket in service portal view. The following steps can be followed to achieve this:
1) Clone the "Ticket Fields" widget
2) Under the Server script field remove or comment lines 29-30 where it says:
3) Make sure to use this new widget in the target page(s)
This change is done as part of the fix for PRB921322 where the quantity of items requested should now be shown in the service portal view.