When I was executing the test case, I noticed that the "Dispensing Unit" field is not marked as required in product edition, even though according to the test case, it should be. The issue occurs on both browsers.
Log into the application as admin.
Go to Administration > Products.
Click the "Edit" button next to any product.
The "Dispensing Unit" field is not marked as required.
The "Dispensing Unit" field should be marked as required.