I’ve seen it both ways. In one case dev spends 3 days refactoring code beautifully to fix the bug; ships to production only to find out that it wasn’t the only bug in this code path. Now they spend another 2 days refactoring before repeating the process and so on. Meanwhile, the company is losing money/customers/favorite vanity metric/whatever.
Or. Dev hacks a fix up, sends to prod. Sees another bug and fixes immediately. No loss in revenue/customers/favorite vanity metric/whatever. Dev creates ticket to refactor/fix code properly and adds to next sprint. PM removes from next sprint to get capacity for further resume driven management projects. Issue crops up again due to hack. Original dev is now able to do ticket originally removed from sprint.
Or. Dev hacks a fix up, sends to prod. Sees another bug and fixes immediately. No loss in revenue/customers/favorite vanity metric/whatever. Dev creates ticket to refactor/fix code properly and adds to next sprint. PM removes from next sprint to get capacity for further resume driven management projects. Issue crops up again due to hack. Original dev is now able to do ticket originally removed from sprint.