There are only two kinds of scenarios that I've seen people do this where it might be vaguely acceptable:
1. Where it is impossible for the developer to test the change himself. For instance, if the bug is not reproducible by the developer due to some difference between the production and development environment that he lacks concrete information about (e.g. external customer). In which case, the developer should test that it didn't break his own system in some additional way and should at least warn the customer that there's no guarantee it'll work.
2. If you are under some contractual obligation to ship on a particular date, and the thing you are shipping is going to be a giant bug ridden turd anyway due to time constraints caused by poor project management. This is not ideal at all, and not something to take any pride in doing, but it may be passably acceptable to cut corners like this if management tells you to because otherwise your employer is going to lose money for not delivering. Especially if you have a "defect release" planned in the contracted schedule later on anyway (e.g. because all parties to the contract already know the schedule is going to produce a turd and planned accordingly).
1. Where it is impossible for the developer to test the change himself. For instance, if the bug is not reproducible by the developer due to some difference between the production and development environment that he lacks concrete information about (e.g. external customer). In which case, the developer should test that it didn't break his own system in some additional way and should at least warn the customer that there's no guarantee it'll work.
2. If you are under some contractual obligation to ship on a particular date, and the thing you are shipping is going to be a giant bug ridden turd anyway due to time constraints caused by poor project management. This is not ideal at all, and not something to take any pride in doing, but it may be passably acceptable to cut corners like this if management tells you to because otherwise your employer is going to lose money for not delivering. Especially if you have a "defect release" planned in the contracted schedule later on anyway (e.g. because all parties to the contract already know the schedule is going to produce a turd and planned accordingly).