Quick answer: Bug tickets that don't link to commits leave history obscure. A simple integration (PR mentions ticket; ticket auto-links to PR) gives you fix archeology forever.
The link between tickets and code is invaluable. Build it; benefit forever.
PR template references ticket
PR description includes 'Closes BG-1234'. Auto-links; tracker reflects merge.
Commit messages include ticket
Every commit mentions a ticket (or 'no-ticket'). git log searches surface relevant commits.
Auto-close on merge
PR merge closes the ticket. Saves the manual triage step; encourages PR-to-ticket discipline.
Ticket-to-commit search
Tracker shows merged commits per ticket. Engineers click; see the fix.
“Tickets and commits are the project's archeological record. Link them.”
If your studio doesn't have ticket-commit linking, set it up next week. The cost is small; the value compounds.