In our game, we have occasional problems w/ IAPs where for whatever reason a purchased IAP doesn't get redeemed, which leads to players requiring aid from the support team.
On our end, a tester reported an issue where he had such problems. 100% reproduction rate, mentioned the affected account to be safe.

Caught the following conversation between two leads regarding that report:

Test Lead 0: Upon rechecking the issue we've discovered that the issue can't be reproduced on our end. We have however confirmed that the one account mentioned in the report is affected.
Test Lead 1: Since we can't reproduce the issue, should we close it?

So, yeah... why bother a poor programmer w/ this issue that is 100% reproducible but w/ one account affected only. Definitely zero chance of fixing at least one instance where this issue might occur.
/s