Landed Cost Voucher - Error

Recently i identified that, the landed cost voucher accept the un checked “Update Stock” invoice (Purchase Invoice). Screenshots below:

This is the mentioned invoice that i din’t check the “Update Stock” button

In Landed cost voucher - when i entered the mentioned invoice no, it is not showing

But when i copy & paste the exact invoice series/no in the field, it will fetch those invoice details

(Copy pate the exact invoice no and click some where in the document)

Note: I have checked this in version 10.1.51 &