Quick answer: Confirm the fix is in the shipped build, then watch the bug's signature in production drop to zero after the release that contains it, rather than assuming merging equals fixed.
A merged fix is not a verified fix. Watching the signature disappear in production confirms it. Here is how.
How to fix it
1. Confirm it is in the build
Verify the fix is actually in the released build and enabled — not behind a flag, not missed by the build, not reverted. A fix that did not ship cannot help players regardless of the closed ticket.
2. Watch the signature in production
Track the bug's crash or error signature after the release that contains the fix. If it drops to zero for the new build, the fix worked; if it persists, the fix was wrong or incomplete.
3. Keep the ticket open until confirmed
Do not consider the bug closed when the code merges — close it when production data shows it is gone. Tying the fix to the live signature is the difference between thinking it is fixed and knowing.
Catching the ones you can't reproduce
The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.
Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.
This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.
The bug you can't reproduce isn't gone — it's just invisible until you capture it from the player's device.