MARC record does NOT open after saving an invalid field

Steps to Reproduce:

1. Go to Inventory
2. Find a record that has source=marc
3. Go to the Actions dropdown and select Edit in quickMARC
4. Select any field and replace any numbers with letters in the first block. Or you can create a new field and add any 3 characters to the first block, where at least one of them is a letter
5. Click Save and close
6. Go to the Actions dropdown and select Edit in quickMARC

Expected Results: Do not allow a user to save the record. When user clicks Save then display a error toast notification message [Invalid MARC tag. Please try again.]

Actual Results: marc record does not open. A red window appears with the message "Record cannot be found or loaded".